Top of mind this week for managers and engineers alike will be hitting the FCC’s July 12 deadline for initial construction permit and repack expense reimbursement filings. But in the rush to get that done, it’s important not to lose sight of future possibilities like single frequency network operation.
TVN TECH
Don’t Lose Sight Of SFNs In Deadline Push
With fewer than 20 ATSC 1 single frequency networks (SFNs) authorized for operation around the country, it might seem a bit off point to be thinking about them as nearly 1,000 TV stations race to complete their initial construction permit and expense reimbursement forms by the FCC’s July 12 deadline for stations in the TV spectrum repack.
However, given the expected overlap in the time between ATSC 3.0 completion and authorization and the scheduled July 3, 2020, completion deadline for the repack, failing to think about SFNs now may prove to be quite shortsighted in the future.
“The critical thing is to not paint yourself into a corner,” says Dennis Wallace, managing partner at broadcast technology consultancy Meintel, Sgrignoli & Wallace.
“With a facility you build today for your repack, you want to have the flexibility to modify it as ATSC 3.0 rolls out and SFNs come into being,” he says.
One way to maintain that flexibility is adding circular or elliptical polarization to a station’s main antenna as it’s replaced for the repack, Wallace says.
Even if the expense of adding a vertical component isn’t compensated in the FCC’s like-for-like reimbursement scheme, doing so while the new permanent repack antenna is being installed will prove to be money well spent, he says.
BRAND CONNECTIONS
“Doing circular polarization helps you with signal density,” Wallace says. “That will help you have a better 1.0 service today, and lead into the possibility of doing mobile and handheld in 3.0 with that same antenna.”
Once the TV spectrum is repacked, greater signal density will help broadcasters cope with an RF environment where there is “a lot more interference than we previously had,” he says.
Looking ahead to 3.0, broadcasters with a vertical main antenna component will be better positioned to complement an SFN deployment aimed at delivering mobile TV and data across their markets, he adds.
Considering a future SFN while designing today’s repack replacement RF infrastructure may also add flexibility to the decision making process, especially as it relates to service maximization, says Merrill Weiss, owner of the broadcast technology consultancy Merrill Weiss Group.
“If you can’t maximize with a single transmitter, you might be able to maximize with an SFN, depending on being able to do interference showings,” he says. “A station with a small contour might be able to expand that in a maximization and fill in with additional SFN transmitters.”
Whether in or outside the context of the TV spectrum repack, single frequency networks can offer broadcasters several benefits.
“The thing that actually buys you the most bang for the buck in an SFN is what we call path diversity,” Wallace says. “By having multiple transmitters, you have multiple paths to the receiver.”
For instance, path diversity may mean the difference between indoor reception and an empty screen for an urban apartment dweller with no exposure to a broadcaster’s main antenna.
“No matter what side of the building you live on, presumably there is a transmitter that will be able to penetrate that particular dwelling [in an SFN deployment scenario],” he says.
According to the literature and studies examined during the development of 3.0, path diversity can account for about 6 dB of gain, Wallace says.
Another plus for SFNs is increased signal level across the entire DMA, says Wallace. “The idea is wherever you go you have 70 or 80 dBu as opposed to 30 or 40 dBu [signal-to-noise ratio],” he says. “That’s certainly a benefit.”
An SFN also can ensure less signal fading and more reliable signal delivery, Weiss adds. “Even if you increase the signal strength from a single main transmitter and you are going 100 miles, you are going to have a lot of fading,” he says. “However, if you put the transmitter 10 miles away and use a lot less power [in an SFN with multiple lower-power transmitters], you will have a lot less fading.”
Another benefit of an SFN is that the lower power transmitters of neighboring broadcasters are less likely to interfere with one another, which in turn offers broadcasters the ability to position their transmitters closer to one another and offers them the chance to cover more territory, he says.
Still another mark in favor of SFNs is their expediency in enabling ATSC 3 channel bonding to boost the reliability of content delivery, Weiss adds.
To date, SFNs have been more popular in Europe and elsewhere around the world where OFDM-based modulation schemes are employed, says Olaf Fahrenkroog, regional sales manager for Rohde & Schwarz.
“Since OFDM [is] based on multiple carriers, it is much more robust against interference … than single carrier modulation like 8VSB,” he says.
Prior to the FCC freezing new construction permit application filings in April 2013, only 19 U.S. stations had deployed 8VSB-based SFNs, says Weiss, who holds patents on critical 8VSB SFN synchronization technologies.
However, 3.0 opens the door to OFDM for U.S. broadcasters and removes obstacles they faced with 8VSB-based SFNs.
“The way the RF signal is modulated in 3.0, it is not as susceptible to multipath —multiple signals arriving at the receiver at the same moment,” Wallace says.
Rather than relying primarily on the receiver’s equalizer to lock onto the signal from one SFN transmitter and reject those from others in an ATSC 1 deployment, OFDM-based ATSC 3 provides for “redundant information” in the transmission which is used by the receiver to determine which signal to use, Wallace says.
“In OFDM, there is a very distinctive way of dealing with symbols as part of transmission frames,” says Avateq CTO Vladimir Anishchenko.
The guard interval created in this scheme “facilitates OFDM symbol detection and echo immunity” and is “the main feature that distinguishes between single carrier [8VSB ATSC 1] and OFDM approaches,” he says.
It is possible to increase the duration of the guard interval to add greater immunity, but doing so comes at the price of decreasing data-carrying capacity, he adds.
How U.S. broadcasters choose to deploy future SFNs will vary from market to market depending on factors like topography and terrain, Wallace says.
But regardless of the specifics, broadcasters deploying SFNs would do well to share single frequency network sites in their markets, says Wallace. “That is actually what the whole idea of market-wide SFNs is based upon.”
In Europe, combined RF infrastructure of multiple stations at SFN sites is common, says Luca Barello, technical and sales manager at antenna manufacturer I-Tech.
“This is the typical solution adopted in Europe,” Barello says. “The city antennas are small broadband panel antennas typically composed of 2- or 4-bay x 4-sides with a combiner filter that can host many broadcasters.”
Having adjacent channels in the same SFN locations also minimizes interference and is beneficial from an economic point of view, Weiss adds.
While the details of future SFN deployments may not be front of mind the week before construction permit and expense reimbursement filings are due at the FCC, it will pay in the long run not to ignore entirely single frequency networks during this final push to meet the deadline, Wallace says.
“Be sure to leave your options open for flexibility. That’s the main thing.”
(Editor’s note: The Pearl TV consortium of major television station groups commissioned a study of the economics of SFN deployments. For more information on that work, see “ATSC 3.0 SFNs Could Offer Multiple Benefits.”)
To stay up to date on all things tech, follow Phil Kurz on TVNewsCheck’s Playout tech blog here. And follow him on Twitter: @TVplayout.
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Bruno Morrow says:
August 9, 2018 at 4:22 am
1. Đánh giá đồ họa của Dell Precision M4600
Trước khi đánh giá vật dụng họa Dell Precision M4600 các bạn chắc cũng có nhiều câu hỏi về kinh nghiệm chọn mua, nguồn gốc xuất xứ Dell Precision M4600 giá rẻ, Dell M4600 cũ…. Nên mình đã có bài viết về vấn đề này, các bạn có thể ghé qua tham khảo tại link Kinh nghiệm chọn mua Dell Precision M4600 cũ và Đánh giá Dell Precision M4600
Đánh giá ngoại hình Dell M4600 được họa tiết thiết kế dạng hình hộp vuông vức – Đây cũng là họa tiết thiết kế chung của dòng Dell Precision. Khung máy của Dell Precision M4600 xách tay được làm từ hợp kim magiê chịu lực giúp tăng thêm độ bền cho máy.
Đánh giá tổng quan Dell M4600 giá rẻ, cũ
Ảnh: Đánh giá tổng quan Dell Precision M4600 cũ, M4600 trông vuông vức với vật dụng họa khung máy hoàn toàn từ hợp kim chịu lựcĐánh giá mặt cạnh trước Dell Precision M4600 cũ, sản phẩm giá rẻ nổi bật
Ảnh: đồ dùng họa cạnh trước của Dell M4600, chính giữa là khóa màn hình của Dell M4600, 2 mặt trên và đáy được hơi vuốt tròn nhẹ, nhưng nhìn chung Dell M4600 gần như một khối hộp vuông
Nắp Capo của Dell Precision M4600 cũ khá cứng cáp, được làm từ nhôm chịu lực. Bản lề màn hình rất chắc chắn. Ngoài phần khung máy từ hợp kim, thì Bao quanh máy đều được làm từ Kim loại, điều này khiến cho Dell Precision M4600 trông rất cứng cáp.
Điểm yếu duy nhất của Dell Precision M4600 là viền màn hình và viền ốp bàn phím đều được làm từ nhựa mềm và chỉ được cố định bằng lẫy nhựa. Tuy nhiên điều này không ảnh hưởng đến kết cấu của máy, nhìn chung Dell Precision M4600 cực kỳ chắc chắn đúng với thương hiệu “Khủng Long Bạo chúa”.
thiết kế nắp gập của Dell Precision M4600 cũ
Ảnh: thiết kế nắp capo, vỏ hoàn toàn từ Kim loại của Dell Precision M4600
cạnh phải, đánh giá bản lề của Dell Precision M4600 giá rẻ
Ảnh: Bản lề chắc chắn của Dell Precision M4600, viền bàn phím được làm bằng nhựa
2. Dell Precision M4600 có đầy đủ các cổng kết nối
Dell Precision M4600 được sử dụng cho công việc chủ yếu là phong cách thiết kế, design,…. Vì lí do đó mà Dell M4600 cung cấp rất nhiều tuỳ chọn kết nối bao gôm: 5 cổng USB (2 cổng USB 2.0, 2 cổng USB 3.0 và cổng kết hợp eSATA / USB 2.0), FireWire, khe cắm ExpressCard mở rộng. Ngoài ra Dell M4600 còn có thêm 3 cổng xuất VGA, HDMI và DisplayPort.
Hầu hết các dòng Máy laptop Business đều không được trang bị cổng HDMI, tuy nhiên Dell Precision được trang bị cổng kết nối này, có thể coi là một lợi thế của Dell M4600 so với các đối thủ
Các cổng kết nối Dell Precision M4600 giá rẻ
Ảnh: Cổng kết nối cạnh trái Dell Precision M4600 gồm có 2 cổng USB 2.0, Cổng 1394, Jack Tai nghe, Mic
Các cổng kết nối cạnh sau của Dell Precision M4600 cũ
Ảnh: Cạnh sau Dell Precision M4600 gồm có 2 khe tản nhiệt, cổng VGA, Ethernet, eSATA, HDMI
cạnh phải của Dell Precision M4600
Ảnh: Dell M4600 trang bị nút Wireless bật/tắt, hai cổng USB 3.0, DisplayPort ở cạnh phải
3. Đánh giá chất lượng màn hình và loa của Dell Precision M4600 cũ
Dell Precision M4600 được trang bị màn hình khủng “Dell UltraSharp” với độ phân giải Full HD 1920 x 1080. Với công nghệ số PremierColor Dell Precision M4600 luôn cho 1 chất lượng cao hiển thị siêu tốt, đạt 100% Adobe RGB Color Gamut.
Panel màn IPS được trang bị cho Dell Precision M4600 cho một hiển thị sắc nét, góc nhìn đạt gần như 180 độ, Khi check màn IPS của Dell Precision M4600 cũ bạn có thể nhìn góc view rộng, theo các hướng để có đánh giá chính xác nhất. Tuy sản phẩm đánh giá là M4600 cũ, nhưng hình ảnh cho thấy uy tín màn rất tốt của Dell M4600 cũ tại
Màn hình của Dell Precision M4600 cũ
Ảnh: Màn hình chất lượng của Dell Precision M4600 cũ tại
Do Dell Precision M4600 là dòng máy chuyên để làm việc nên chất lượng cao Âm thanh của máy chỉ ở mức trung bình. Điều này không chỉ Dell M4600 mà bạn sẽ gặp trên tất cả các dòng máy trạm cũng Laptop Dell (maytinhdebandell.com) business.
Tuy nhiên một lợi điểm lớn của Dell M4600 là loa của máy được vật dụng họa phía ngay trên bàn phìm và hướng về phía người sử dụng, loa âm thanh nổi cũng cải thiện đáng kể âm lượng của Dell M4600
đồ đạc họa 2 loa trên bàn phím của Dell Precision M400 giá rẻ
Ảnh: Dell Precision M4600 được bố trí 2 loa âm thanh nổi phía trên bàn phím, hướng thẳng đến vị trí người sử dụng
4. Đánh giá chất lượng bàn phím, trachpad của Dell Precision M4600 cũ
Bàn phím full-size bố trí đơn giản, với đèn nền LED. Dell Precision M4600 sở hữu các phím có màu đen mờ để có thể tránh được vết ố do dấu vân tay để lại. Các phím có kích thước hợp lý, độ nảy khá êm, theo đánh giá của mình thì rất chất lượng bàn phím của Dell Precision M4600 tốt chỉ thua ThinkPad, và hơn hẳn của Hp Elitebook.
Đèn nền backlit để hỗ trợ gõ phím ban đêm tuy nhiên độ sáng còn hơi kém, nhìn chung theo mình tác dụng lớn nhất của bàn phím backlit là để trang trí, còn đối với dòng máy chuyên làm việc như Dell Precision M4600 thì yếu tố này không quan trọng lắm.
Bàn phím của Dell Precision M4600 cũ
Ảnh: Bàn phím của Dell Precision M4600 được bố trí hợp lý, phím điều hướng hơi được nhô xuống rất dễ sử dụng, tuy nhiên chất lượng đèn nền Backlit còn khá kém
Touchpad của Dell Precision M4600 là touchpad cảm ứng đa điểm, tuy vậy độ ổn định không cao, và phần lớn người dùng cũng chỉ thao tác chủ yếu với 2 ngón tay. Có thể một phần do người dùng chuyên về đồ dùng họa nên việc trang bị cho Dell Precision M4600 một con chuột ngoài là hoàn toàn cần thiết
bàn phím của của Dell Precision M4600 giá rẻ
Ảnh: Bàn di chuột của Dell Precision M4600 khá trơn, chuột có độ nảy thấp
5. Hiệu năng của Dell Precision M4600 cũ
Đây chính là những gì tinh tuý nhất của một chiếc máy trạm Workstation, Dell Precision M4600 cũng không phải ngoại lệ. Dell M4600 đáp ứng tốt các công việc đồ hoạ khắt khe nhất. Tuy là dòng máy cũ sản xuất được 2 năm nhưng sức mạnh của Dell Precision M4600 đủ sức lấn át rât nhiều dòng máy vi tính hiện nay (xu thế máy vi tính xách tay hiện nay sử dụng chip U trong khi option cao nhất của Dell M4600 được trang bị chip i7 XM siêu khoẻ)
Card đồ hoạ được trang bị theo máy là Card NVIDIA Quadro 1000M 2GB, theo mình chỉ với card Quadro 1000M đã dư sức đáp ứng các công việc đồ hoạ của bạn, trong trường hợp bạn sử dụng Dell Precision M4600 vào những công việc nặng hơn như Render… thì bạn có thể tuỳ chọn Option cấu hình Card Quadro 2000M với sức mạnh được nâng cao đáng kể.
Về lưu trữ, Dell Precision M4600 được tuỳ chọn các lưu trữ ổ cứng tốc độ nhiều ssd 128GB hoặc ổ đĩa cứng 320GB, 500GB 7200 vòng/phút. Với nhu cầu sử dụng máy vào những công việc đồ hoạ nặng thì mình khuyến cáo các bạn nên lựa chọn ổ ổ cứng thể rắn ssd 128GB cho cài Windows và nâng cấp thêm 1 ổ cứng thứ 2 phục vụ việc lưu trữ.
Dell M4600 được trang bị Option RAM 8GB Bus 1333MHz và có thể Upgrade lên max 32GB RAM
so sánh Dell Precision M4600 cũ và các dòng máy workstation
Ảnh: So sánh hiệu năng Dell M4600 cũ với các dòng laptop xách tay khác
6. Đánh giá khả năng tản nhiệt, thời lượng sử dụng Pin thực tế của Dell Precision M4600 cũ
Đối với người sử dụng thiên về đồ hoạ thì nhiệt độ máy luôn được quan tâm đặc biệt, khác biệt so với các dòng Máy máy tính khác thì Dell Precision M4600 được trang bị hẳn 2 quạt tản nhiệt nằm ở 2 bên máy, nhiệt độ Dell M400 khi hoạt động chỉ rơi vào tầm 50 đến 60 độ C.
Do sản phẩm mình check là M4600 cũ, nên có thể nhiệt độ cao hơn một chút, chúng ta có thể giải quyết bằng việc cho Dell M4600 cũ đi SPA tra lại keo tản nhiệt mới.
khả năng làm mát của Dell Precision M4600
Ảnh: Dell Precision M4600 giá rẻ được trang bị 2 quạt làm mát hoạt động hiệu quả tốt nhất…
Dell Precision M4600 được trang bị một cục Pin 8 cell khá khoẻ, nếu test máy Del M4600 cũ ở chế độ high performance thì viên pin này có thể trụ được khoảng 2,5h. Tất nhiên với một chiếc máy trạm rất khoẻ và cũng đã sản xuất được 2 năm thì đây cũng là kết quả có thể hài lòng.
Hệ thống tản nhiệt phía dưới của Dell Precision M4600 giá rẻẢnh: Hệ thống tản nhiệt 2 quạt của Dell Precision nhìn từ phía dưới, máy cũng được trang bị một viên Pin 8 Cell khá lớn
Kết luận
Nhìn chung, Dell Precision M4600 là một chiếc máy trạm di động được vật dụng họa cho các công việc chuyên về đồ hoạ, thiết kế. Tuy thiết kế có phần hơi thô và cứng nhưng uy tín mà máy mang lại là vô cùng tuyệt vời. Màn hình UltraSharp được các chuyên gia đánh giá rất cao. Tất nhiên Dell Precision M4600 vẫn còn một số nhược điểm như máy vẫn còn một số chi tiết ốp nhựa, khá dày và nặng, uy tín âm thanh kém và thời lượng pin không được cao. Những điều này cũng được Dell dần chỉnh hình lỗi ở những dòng sản phẩm sau, tuy nhiên do có tầm giá rẻ (do là máy cũ) lại đáp ứng được những công việc chuyên biệt thì Dell M4600 giá rẻ vẫn là một sự lựa chọn thông minh, ăn chắc mặc bền đối với đại đa số người dùng. Mình cũng khuyến cáo chỉ các bạn nam theo học và làm việc về thợ cải thiện mới nên xem xét lựa chọn Dell M4600 cũ.
Bài viết này mình đánh giá sơ qua về Dell Precision M4600 cũ – dòng sản phẩm giá rẻ nổi bật hiện nay, các bạn có thể tham khảo thêm bài viết Kinh nghiệm chọn mua Dell Precision M4600 cũ để có thêm kiến thức về máy cũng như thông tin về nguồn gốc, xuất xứ của máy.
Dell Precision M4600 giá rẻ đang được phân phối tại .Và nếu bạn quan tâm và muốn sở hữu chiếc máy này, hãy nhanh tay đặt hàng để được hưởng những ưu đãi hấp dẫn.
Harris Eng says:
August 9, 2018 at 4:24 am
Được coi là dòng Laptop HP (just click the up coming web site) đắt tiền nhất của Dell, dòng máy trạm di động Precision của Dell được ra đời nhằm mục đích trang bị một chiếc máy tính xách tay xách tay có hiệu suất cực mạnh có khả năng thay thế máy để bàn trong khi vẫn có thể dễ dàng di chuyển.
Dell Precision M4700 là phiên bản nâng cấp của đàn anh M4600 trước đó. Ngoại hình gần như được giữ nguyên với đồ họa hình hộp vuông vức, chất liệu vỏ vẫn là hợp kim nhôm – magie siêu bền. Bên cạnh đó, cấu hình được nâng cấp hoàn toàn lên chíp Intel Core i7 3720QM với 2 option card màn hình NVidia Quadro K1000M hoặc K2000M.
Cấu hình chi tiết:
Dòng máy: Workstation
Bộ sửa chữa (CPU): Intel Core i7 Core i7 3720QM
Bộ nhớ (RAM): 8GB DDR3.
ổ hdd (HDD): 500GB SATA
VGA: Intel HD Graphics 4000 + Nvidia Quadro K1000M (Option: VGA Quadro K2000M)
Màn Hình: 15.6 inch Anti-glare LED Backlit High Definition (option: HD+, Full HD 1920×1080).
Đĩa Quang: Đọc và ghi DVD
Pin: 8cells Li-ion – 2h
Kích Thước và Trọng Lượng: 3.44kg
Cổng Giao Tiếp: 2 x USB 2.0, 2 x USB 3.0, VGA, DisplayPort, Card Reader, E-sata, HDMI.
Giao Tiếp Mạng: Wifi chuẩn a/b/g/b Intel Centrino Ultimate-N 6300 AGN, Bluetooth 4.0, ethernet 10/100/1000 kbps.
Win : Windows 7 có bản quyền.
phong cách Designer
Với đồ họa khung máy dày dặn, Dell M4700 được đồ họa chắc chắn với khung máy làm từ hợp kim chịu lực và vỏ máy bằng nhôm xám chống va đập và trầy xước tuyệt vời. Vỏ máy được sơn một lớp sơn tĩnh điện, giúp máy có khả năng chống bụi bẩn rất tốt.
Vẫn với tông màu nâu đồng truyền thống, M4700 mang lại cảm giác chắc chắn từ những cái nhìn đầu tiên. Với những góc cạnh vuống vắn cộng với một tông màu tối, máy tạo cho người sử dụng một sự tự tin, khoẻ khoắn. Các viền máy đều được bo tròn nhưng vẫn không làm mất đi vẻ ngoài mạnh mẽ, chắc chắn, có phần nam tính của M4700.
Cổng kết nối
Nhằm phục vụ tối đa cho công việc, Dell Precision M4700 được hỗ trợ đa dạng các cổng kết nối, bao gồm:
Cạnh phải là vị trí của cổng DispalyPort và 2 cổng USB 3.0
Cạnh trái có 2 cổng USB 2.0, Kensington, audio, card reader, DVD, ExpressCard/SmartCard, FireWire.
Phía sau gồm VGA, USB 2.0, eSATA, cổng HDMI và RJ-45.
Với cổng kết nối đa dạng như vậy, người sử dụng hoàn toàn có thể tận dụng tối đa Dell Precision cho công việc và lưu trữ dữ liệu.
Cổng giao tiếp
Ngoài ra, M4700 có Wifi chuẩn a/b/g/b Intel Centrino Ultimate-N 6300 AGN và Bluetooth 4.0, sử dụng card ethernet 10/100/1000 kbps và hỗ trợ cắm thêm card WWAN có thể kết nối 3g bằng sim.
Màn hình
Dell Precision M4700 được trang bị màn hình FullHD 15.6 inch độ phân giải 1920 x 1080 pixel hiển thị cực tốt với khả năng chống chói, chống lóa và màu sắc tươi sáng với góc nhìn rộng sử dụng công nghệ tấm nền IPS.
218
cd/m²
220
cd/m²
215
cd/m²
213
cd/m²
209
cd/m²
211
cd/m²
220
cd/m²
222
cd/m²
225
cd/m²
Distribution of brightness
Gossen Mavo-Monitor
Maximum: 225 cd/m² Average: 217 cd/m²
Brightness Distribution: 93 %
Center on Battery: 209 cd/m²
Contrast: 597:1 (Black: 0.35 cd/m²)
ICC File (X-Rite i1Display 2)
Nhờ công nghệ thông tin IPS, độ ổn định góc nhìn là tối đa. Trong các cửa hàng trực tuyến Dell phân biệt giữa một màn hình hiển thị bình thường với một bảng điều chỉnh cao cấp, các bảng điều khiển đề cấp đến việc sử dụng RGB LEDs trước đây. Để kết nối với một màn hình bên ngoài các trạm cung cấp đa chức năng: VGA cho những màn hình và máy chiếu cũ hơn cũng như HDMI và DisplayPort.
M4700 vs. sRGB M4700 vs. Adobe RGB 1 M4700 vs. Dell M4600 M4700 vs. Lenovo ThinkPad W530
Thêm vào đó, màn hình của Precision M4700 còn được Dell trang bị cho một lớp chống chói nên bạn có thể sử dụng thoải mái ở ngoài trời hay những nơi tập trung nhiều ánh sáng mà không bị ảnh hưởng.
Âm thanh
Với đầu ra âm thanh tương đối lớn và rõ ràng, việc nghe nhạc và xem phim trên M4700 đều cho người dùng trải nghiệm khá tốt. Đặc biệt M4700 có hệ thống loa được đồ họa phía trên bàn phím mang đến chất lượng cao âm thanh mạnh mẽ, mang đến cảm giác mới mẻ so với những chiếc laptop cùng phân khúc khác.
Hiệu năng
vi tính Dell M4700 được trang bị chip sửa hỏng Intel Core i7 – 3720QM Processor với 6MB cache và tốc độ sửa lỗi có thể lên tới 3.6Ghz, giúp máy có khả năng khắc phục các tác vụ thiết kế nặng, sửa lỗi nhiều thuật toán phức tạp trong thời gian ngắn mà không gặp quá nhiều khó khăn.
Không những vậy, máy còn được trang bị card đồ họa rời K1000M – card đồ họa chuyên dụng dành cho máy trạm giúp tăng khả năng xử lý phong cách Designer tối đa cho máy. So với các GPU từ GeForce, các mô hình Quadro đặc biệt tối ưu cho các ứng dụng CAD. Ngoài ra M4700 còn có một option card phong cách Designer NVIDIA Quadro K2000M chuyên nghiệp với 2 GB RAM GDDR3.
phong cách Designer game
Sở hữu đồ họa đẹp, bền bỉ cũng như hiệu năng sử dụng ấn tượng, với mục đích thay thế khả năng làm việc của Destop điện thoại tính để bàn cho phép làm việc liên tục ở cường độ nặng, đồng thời vẫn đảm bảo khả năng di động tuyệt vời. Dell M4700 có thể chiến tốt các phần mềm phong cách Designer thiết kế chuyên nghiệp như AutoCad, 3Dsmax, phương tiện làm phim như Adobe về chơi game thì một loạt danh sách các game hot như CS:GO, PES, Fifa, Liên minh huyền thoại LOL, Overwatch, GTA … Chính vì vậy M4700 luôn được đánh giá cao và nổi bật trong dòng Workstation của hãng.
Nhiệt độ
Với mọi oại máy tính bàn hay workstation, nếu hiệu năng càng cao thì nhiệt độ cũng tỉ lệ thuận. Tuy nhiên các nhà sản xuất đã tính đến trường hợp nóng trên các dòng máy trạm di động, vì thế dell M4700 đã được trang bị 2 khe tản nhiệt lớn ở phía sau máy, phía dưới được thiết kế các khe hút gió lớn nhằm luôn giữ máy dưới khoảng nhiệt độ 40’C, độ ồn máy không đáng kể.
Bàn phím
Bàn phím backlit của Dell Precision M4700 được đánh giá rất cao. Với độ nảy tốt, phong cách Designer mềm mại và được trang bị CNTT chống tràn nước, bàn phím Dell M4700 sẽ cho người sử dụng khả năng làm quen và đánh máy với tốc độ cao, tạo sự thoải mái khi sử dụng.
Touchpad
Touchpad mang lại cho người sử dụng một cảm giác thân thiện và thoải mái. bề mặt touchpad mờ và kết cấu khá giống như lòng bàn tay, cho cảm giác trơn mịn do độ ma sát thấp giúp trỏ chuột di chuyển chính xác. Song do đồ họa tách rời hai phím chức năng trái phải chuột nên phần còn lại của touchpad khá nhỏ, không thực sự thoải mái khi thao tác cảm ứng đa điểm.
Kết luận
Xét tổng thể thì có thể nói M4700 là một sự lựa chọn khá hoàn hảo từ cấu hình mạnh mẽ được trang bị các cao cấp , kết nối khá đầy đủ và hiện đại giúp dễ dàng chiều lòng nhiều đặc thù công việc.
Không chỉ mạnh mẽ về cấu hình mà độ bền của dòng DELL Precision M4700 được chăm chút kỹ càng đạt các tiêu chuẩn quân sự Mỹ, có thể chạy liên tục mà không phải quá lo nghĩ. Máy có một điểm trừ duy nhất là về cân nặng và vẻ ngoài khá cồng kềnh. Tuy nhiên, nếu bạn là người không quá chú trọng về hình thức hay máy ít khi phải di chuyển nhiều thì DELL Precision M4700 thực sự là ứng cử viên sáng giá với đồng tiền bỏ ra nhất.
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