XFX R7790 Black Edition Overclocked Reviewccokeman -
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XFX R7790 Black Edition Overclocked Testing:
Testing of XFX's R7790 Black Edition Overclocked 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 a range of capabilities to show where each card falls on the performance ladder. The games used are some of today's newest and most popular titles, which should be able to provide an idea of how the cards perform relative to each other.
The system specifications will remain the same throughout the testing. No adjustments will be made to the respective control panels during the testing to approximate the performance the end user can expect with a stock driver installation. I will first test the cards at stock speeds, and then overclocked to see the effects of an increase in clock speed. The cards will be placed in order from highest to lowest performance in each graph to show where they fall by comparison. The NVIDIA comparison cards including the GTX 650Ti Boost will be using the 314.21 beta drivers. AMD-based cards will be using the Catalyst 13.1 drivers and latest CAP profile with the exception of the HD 7790 which will use the release press evaluation driver.
- Processors: Core i7 2600K @ 4.4 GHz 100 x 44
- CPU Cooling: Corsair Hydro Series H100
- Motherboard: Gigabyte Z68AP-D3
- Memory: Mushkin 993997 9-11-10-28 (1866 MHz)
- Video Card: XFX R7790 Black Edition Overclocked
- Power Supply: Corsair AX1200
- Hard Drive: Corsair Force GT 240GB
- Optical Drive: Lite-On Blu-Ray
- Case: Corsair Obsidian 650D
- OS: Windows 7 Professional 64-bit
Comparison Video Cards:
- NVIDIA GTX 650Ti
- ASUS GTX 660Ti DC II TOP
- PowerColor PCS+ HD 7870 Myst
- Sapphire HD 7950 OC
- ASUS GTX 660 DC II TOP
- Sapphire HD 7790 Dual-X OC
- Powercolor HD 7850 PCS+
- XFX R7790 Black Edition: Core 1251MHz, Memory 1700MHz
After looking at Sapphires HD 7790 Dual-X OC I felt that as overclocking tools matured for the release of the HD 7790 the headroom available from the silicon would indeed prove out my thoughts that there was more left in the cards. XFX's offering arrived a little late for the initial look at the HD 7790 but I have to say the wait was worth it as this card delivered impressive overclocking headroom on the core and pushed the memory to a higher level than I have been able to reach on other cards using the same VRAM. The increase on the core over the 1075MHz baseline was 176MHz or just over 16%. The memory increase was 100MHz over the already overclocked 1600MHz at 1700MHz or a boost of between 6 and 7%.
To reach these levels I used MSI Afterburner version 3.0.0 Beta 9 that bypassed the clock speed limits seen on earlier cards at 1200MHz core and 1600MHz memory. The Double Dissipation cooling system fans were pushed to 100% in order to keep the GPU core and memory as cool as possible during the benchmark and stability testing. The dual fans are audible when manually controlled and set above 75%, yet when the vBIOS controls the fans they are inaudible outside the chassis of my test system. Excellent cooling and overclocking potential give the XFX R7790 some added performance when running game settings on high.
Maximum Clock Speeds:
Testing for the maximum clock speed consisted of looping Unigine Heaven 4.0 for 30 minutes each to see where the clock speeds failed when pushed. If the clock speed adjustment failed, then the clock speeds and tests were rerun until they passed a full hour of testing.
- Gaming Tests:
- Metro 2033
- Crysis 3
- Batman: Arkham City
- Battlefield 3
- Unigine Heaven Benchmark 4.0
- Unigine Valley 1.0
- Sid Meier's Civilization V
- DiRT 3
- Far Cry 3
- Power Consumption