XFX & Sapphire HD 7770 1GB Reviewairman -
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Testing of both the XFX Black Edition Radeon HD 7770 and Sapphire HD 7770 will consist of running it and the comparison cards through the OverclockersClub.com suite of games and synthetic benchmarks. This will test the performance of the video card against many popular competitors. Comparisons will be made to cards of equal and greater capabilities to show where they each fall on the performance ladder, using games that are some of today's newest and most popular titles which will provide an idea of how the cards perform relative to each other.
The system specifications remain the same throughout the testing. No adjustment will be made to the respective control panels during the testing with the exception of the 3DMark Vantage testing, where PhysX will be disabled in the NVIDIA control panel, if applicable. The card will first be tested at stock speeds and then overclocked to see the following effects. The cards will be placed in order from highest to lowest performing in the graphs to show where they fall by comparison. The drivers used are the 11.12 Catalyst drivers for AMD-based cards, with the exception being the new HD 7700 series that have been tested with the latest AMD press release performance driver driver. The 290.53 drivers for NVIDIA-based cards are used for the testing.
- Processors: Core i7 2600K @ 4.4 GHz 100 x 44
- CPU Cooling: Corsair Hydro Series H100
- Motherboard: Gigabyte Z68AP-D3
- Memory: Mushkin 991996 Redline PC3-17000 9-11-10-28 8 GB
- Video Card: XFX Black Edition HD 7770 Double Dissipation, Sapphire HD 7770
- Power Supply: Corsair AX1200
- Hard Drive: 1 x Seagate 1TB SATA
- Optical Drive: Lite-On DVD-RW
- Case: Corsair Graphite Series 600T
- OS: Windows 7 Professional 64-bit
Comparison Video Cards:
- XFX HD 7770 Black Edition 1 GB Core 1213MHz Memory 1411MHz
- Sapphire HD 7770 1 GB Core 1244MHz Memory 1395MHz
Overclocking these cards found to be a little more difficult than I am used to, simply because fresh hardware doesn't always have the right software prior to its release. I was able to find that MSI Afterburner 2.2 Beta 10 or higher allowed me to overclock both of these cards with Unofficial Overclocking enabled through Afterburner's configuration, but I was not fortunate enough to unlock voltage adjustments. I tried with betas 10, 11, and 12, but was unable to unlock the voltage adjustment. Without it, I was still able to manage over 1.2GHz on each's core and almost 1.4 GHz on both for the memory. The temperatures stayed well within my comfort zone during stability testing, and I wish I could have unlocked an extra tenth of a volt (or maybe more) to get ahold of a better overclock. I think with the right cooling and enough voltage, the right cards could be suitable for a 1.3GHz core which would be very impressive!
Maximum Clock Speeds:
Testing for the maximum clock speed consists of looping Unigine 2.5 for 30 minutes each to see where the clock speeds fails when pushed. If the clock speed adjustment fails, then the clock speeds and tests are rerun until they pass a full hour of testing.
- Gaming Tests:
- Metro 2033
- Batman: Arkham City
- Battlefield 3
- Unigine Heaven Benchmark 2.5
- Dirt 3
- Mafia II
- 3DMark 11
- Power Consumption