PowerColor HD6950 PCS+ Reviewgotdamojo06 - May 24, 2011
Testing of the PowerColor HD6950 PCS+ will consist of running it and comparison cards through the OverclockersClub.com suite of games and synthetic benchmarks. This will test the performance against many popular competitors. Comparisons will be made to cards of equal and greater capabilities to show where they fall on the performance ladder. The games used are some of today's newest and most popular titles to give you an idea of how the cards perform relative to each other.
The system specifications will remain the same throughout the testing. No adjustment will be made to the respective control panels during the testing other than applying the AA and AF settings manually in the control panel. I will test the cards at stock speeds, then overclocked in order to see the effects of any increases in clock speed. The cards are placed in order from highest to lowest performing in the graphs to show where the cards fall by comparison.
- Processor: Intel Core I7 920 200x18 3.6GHz
- Cooling: Noctua NH-U12P SE 1366
- Motherboard: ASUS P6T Deluxe OC Palm Edition
- Memory: Mushkin 996805 Redline PC312800 6-8-6-24 1600MHz
- Video Card: PowerColor HD6950 PCS+
- Power Supply: Mushkin 1000 watt Joule Modular power supply
- Hard Drive: 1 x Seagate 1TB SATA
- Optical Drive: LG DVD-RW
- OS: Windows 7 Professional 64-bit
- Case: Cooler Master HAF 932
Comparison Video Cards:
- PowerColor HD6950 PCS+ | GPU - 970 MHz | Memory - 1330MHz
When it came down to the overclocking of the PowerColor HD6950 PCS+ it was pretty straight forward. Just like every video card, all I needed to do was launch MSI Afterburner and slowly begin raising the GPU clock by 10MHz and test for stability. Once the card became unstable, I knew that it was unable to go any higher. However, I decided to raise the voltages that go into the GPU to see if I could get any higher GPU clocks. However this posed a problem. MSI Afterburner does not support voltage adjustments for the HD6950 PCS+, the solution to this problem was to launch TRIXX and see if that would allow me to adjust the voltages, and to my surprise, it did let me! So I adjusted the voltages up to 11187mV. The final clock that I was able to get on the GPU core was 970 MHz, an impressive 120MHz increase, or 14%. Once I had a stable core clock, it was time to move on to the memory. It already started out at 1300MHz, and I started to raise the clocks by 10MHz at a time and testing to ensure stability. However, I was only able to make it to 1330MHz. Any higher clocks would cause a crash on the graphics card. So I was only able to get an extra 30MHz on the memory, or an increase of 2%.
Maximum Clock Speeds:
Testing for the maximum clock speed consists of looping Crysis Warhead and Unigine 2.5 for 30 minutes each to see where the clock speeds will fail when pushed. If the clock speed adjustment fails, then the clock speeds and tests are rerun until they pass the full one hour of testing.
- Gaming Tests:
- Aliens vs. Predator
- Metro 2033
- Crysis Warhead
- HAWX 2
- Just Cause 2
- Unigine Heaven Benchmark 2.5
- Mafia II
- Battlefield: Bad Company 2
- Lost Planet 2
- 3DMark 11
- Power Consumption