ECS P35T-A Motherboardccokeman -
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Overclocking on this board is as simple as it gets to a point. You have very few options in the BIOS with which to get out of bounds or to tweak to get to the next level. The voltage options are terrible if this board is going to be overclocked. 1.5 volts to the CPU is barely enough to get started with when you take into account the voltage droop apparent in every socket 775 motherboard on the market. If you have high performance memory, you are out of luck if you need more than 2.0 volts for it to perform at its best. If you have components that perform well at low voltage settings or prefer to not take things to the limit, this board would be the one for you. It does well enough at default settings that the average person would not mind the lack of voltage options.
Memory timings leave a bit to be desired for the enthusiast. The only timings available are CAS latency, RAS to CAS Delay, RAS Precharge and TRAS. Just like with the voltage options, there is enough adjustability to keep you from going way out of bounds.
The gist of this is that while you are able to overclock this board, it will not get you to the highest clock speeds your hardware is capable of. But it will get you part of the way there. If you are using stock cooling and don't want to go hog wild but just want to get a little extra performance from your hardware, this board will suit you just fine. The main limiting factors for extreme performance are the inability to adjust the CPU clock multiplier up or down to maximize the achievable front side bus speed. The memory speed is automatically adjusted upwards while adjusting the front side bus speed. But with the lack of voltage support, you can get your memory up to speeds it cannot handle real quick. With a FSB of 342 on the CPU, the memory was set to a 2:3 divider and was running at 510 FSB. At this speed, the memory needs more voltage to keep running without errors, and subsequently failed prime 95 on a memory related test. At 335 FSB on the CPU, the memory sits at 502 FSB.
This board was tested with 2 different processors, an E6700 and an E6750. Without being able to adjust the multiplier, the maximum front side bus speed acheived was 342x 10 on the E6700 and 397x 8 on the E6750. Both of these speeds were limited by the memory speeds and dividers the board sets and the inadequate voltage for high performance memory. The E6700 used is capable of 3600MHz (400x9) prime stable, and the max FSB it can achieve is 490 FSB. The E6750 is capable of 3962 MHz prime stable and 4100Mhz bench stable with a FSB of 498 and 513 for each mark. Prime 95 stability is my test for real world everyday usage. There is nothing like being two hours into that all night fragfest and having blue screens start popping up to ruin your night.