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Friday, 21 January 2011 13:52

PowerColor HD 6850 PCS+ tested - 2. A closer look at HD 6850 PSC+

Written by Sanjin Rados
thumbrecommended08_75

Review
: Another Batmobile


PowerColor HD 6850 PCS+ is a special version of Radeon HD 6850 card that comes factory overclocked and strapped with special cooling.

Just a reminder – at the end of October 2010, AMD launched two new graphics cards from its Northern Islands family  - Radeon HD 6870 and HD 6850. Radeon HD 6870 and HD 6850 are not high-end cards but rather products made with medium budget in mind, so called Gamers’ sweet spot cards.

PowerColor overclocked its HD 6850 PCS+ card as you can see from the GPUZ screenshot. Clock speed is 820 MHz and 1100 MHz memory, which is 6% more on core and 10% more on memory compared to reference clocks.

gpuz_def

The Barts PRO is quite similar to the Bart XT except, of course, for the fact that it has two SIMDs less, or simply, it has 48 Texture Units (TMUs) and 960 Stream processors. The Barts XT, known as the HD 6870 card, has 14 SIMDs, with 80 Stream Processor per SIMD (total of 1120 Stream Processors) and 56 texture units (TMUs).

Bart PRO ended up clocked at 775MHz for the GPU and 4000MHz for 1GB of GDDR5 memory paired up with a 256-bit memory interface.

front1


PowerColor HD 6850 PCS+ looks pretty nice and the hood seriously makes the card resemble the futuristic racing car pictured on the box. Actually it uses the cooler from bigger brother HD 6870 PSC+.

front2

The HD 6870 PCS+ cooling is dual slot and the card is 22.5cm long. The fan is 9cm in diameter and is connected to the 3-pin connector. Fan speed regulation can be performed via the Catalyst Overdrive or any other tool you may prefer.
power

The I/O panel features one DisplayPort 1.2 connector, one HDMI 1.4a and two DVI connectors (one of them is single-link with maximum resolution of 1920x1200).

video-out

Just like the Radeon HD 6870, Radeon HD 6850 comes with only one CrossFire connector. This means that you can only use two cards in 2-way CrossFire.


video-2

HD 6850 PCS+'s heatsink uses three heatpipes to draw heat from the GPU core. The GDDR5 memory chips are made by Hynix (model number H5GQ1H24AFR-T2C). They are specified to run at 1250 MHz (effective 5000 MHz).

Radeon HD 6850 consumes 127W at max so it will require one 6-pin power connector. Software voltage control via I2C is not possible due to use  of more cost effective voltage regulator uP6213.

back


 

HD 6850 PCS+ box is small, sturdy and quite similar to packaging of the HD 6870 PCS+ card.

6850-box-0

boxovi
6850--box-1
6850-box-2

PowerColor included all the necessary accessories, such as DVI-to-VGA converter and miniDisplayPort-to-DisplayPort converters. Standard sized HDMI is already on the card.

6850_box_3

Our test HD 6850 PCS+ card comes with a download voucher for “Call of Duty Modern Warfare 2”, but we have found out that this will only be included in certain regions. Since most regions do not get this gift, it might be wise to consult your retailer.


Testbed

Motherboard: EVGA 4xSLI
CPU: Core i7 965 XE (Intel EIST and Vdrop enabled)
Memory: 6GB Corsair Dominator 12800 7-7-7-24
Harddisk:   OCZ Vertex 2 100 GB
Power Supply: CoolerMaster Silent Pro Gold 800W
Case: CoolerMaster HAF X
Fan Controler: Kaze Master Pro 5.25"
Operating System: Win7 64-bit
263.09_desktop_win7_winvista_64bit
10.12 CCC

testbed


3D Mark Vantage

Vantage
Aliens vs Predator

AliensVsPredator
Metro 2033
Metro

Unigine Heaven v2.1

UnigineHeaven


Overclocking

HD 6850’s reference clocks are 775MHz for the GPU and 1000MHz for the memory, and our today’s PowerColor cards clocks are 820MHz for the GPU and 1100MHz for the memory. We relied on MSI’s Afterburner for our overclocking..

We managed to hit 970MHz for the GPU and 1170MHz for the memory by running the card on factory voltage and with the fan in AUTO mode. Software voltage control via I2C is not possible due to use  of more cost effective voltage regulator uP6213.

gpuz_def

afterburner_oc


Thermals and Noise

PowerColor HD 6850 PCS+ didn’t exceed 77°C during our tests. The cooler was almost inaudible in idle operation (44°C). The cooler wasn’t loud, not even in intensive GPU operation.

temp_idle_and_load

Power Consumption

HD 6870 consumes 19W in idle and maximum 151W during operation whereas the 6850 draws 19W when idle and maximum 127W during operation.

PowerColor HD 6850 PCS+ consumption is roughly comparable to the AMD reference design.


Conclusion

PowerColor HD 6850 PCS+ is a factory overclocked card that comes with special cooling. The card is currently priced at €162 in the EU, which is about €15 more than PowerColor’s reference HD 6850.

PowerColor HD 6850 PCS+ performance is good and will definitely satisfy most gamers who prefer 1920x1080.
The factory overclock will provide up to 5% better results compared to the reference card. The cooler is efficient and very quiet in idle mode, but the same goes when the card is in intensive operation.

Users living in certain region will receive Call of Duty Modern Warfare 2 download voucher, but make no mistake - PowerColor HD 6850 PCS+ is a nice deal regardless. The card bundled with the game is priced some €16 higher.

Quiet cooling and boosted performance with only €15 higher price are reason enough for us to dub the PowerColor HD 6850 PCS+ card a Fudzilla Top Value product. You can find it listed here.

top-value-2010

(Page 2 of 7)
Last modified on Friday, 21 January 2011 16:02
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