ECS GeForce GT 640 Reviewformerstaff - May 13, 2013
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ECS GeForce GT 640 Testing:
Testing of the NVIDIA ECS GeForce GT 640 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 adjustment will be made to the respective control panels during the testing, with the exception of the 3DMark 11 testing, where PhysX will be disabled in the NVIDIA Control Panel, if applicable. 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 AMD comparison cards will be using the 13.3 drivers with Nvidia GT 640 cards using the 314.07 drivers.
- Processors: AMD FX-8150
- CPU Cooling: Corsair Hydro Series H100
- Motherboard: ECS A970-A Deluxe
- Memory: Mushkin 993997 9-11-10-28 (1866 MHz)
- Video Card: ECS GeForce GT 640
- 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:
- AMD A10-5800K 7660D Integrated Graphics
- ECS NVIDIA GT 640 Core 1180MHz, Memory 1618MHz
To overclock the ECS GT 640 we will be using the EVGA Precision overclocking tool. The GT 640 proved to be a decent overclocker, being able to be pushed from an already non-reference frequency of 930MHz to 1101MHz. We will see, however, in the upcoming tests that the effect of this overclock is somewhat hampered by the cut down shader count, the use of slower DDR3, and a 128-bit bus. This proved to be all the frequency that the GT 640 had in it with additional voltage having no effect in the pursuit of a higher overclock.
Maximum Clock Speeds:
Testing for the maximum clock speed consisted of looping Unigine 3.0 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
- Batman: Arkham City
- Battlefield 3
- Unigine Heaven Benchmark 4.0
- Sid Meier's Civilization V
- DiRT 3
- Mafia II
- 3DMark 11
- Power Consumption