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Recommended Book
High Performance Memories: New Architecture DRAMs and SRAMs - Evolution and Function
By Betty Prince
Wiley
Price: $139.89

Home » Memory
Corsair TWIN2X2048-8500C5 (DDR2-1066/PC2-8500) 2 GB Memory Kit Review
Author: Gabriel Torres
Type: Reviews Last Updated: August 10, 2006
Page: 8 of 9
$ Check REAL-TIME pricing for Crucial Technology Ballistix 2 GB PC2-8600 DDR2 RAM (BL2KIT12864AL1065) $
Dell: $89.99 B&H Photo Video Pro Audio: $69.95
J&R Music and Computer World: $78.99 ZipZoomfly.com: $73.90
Newegg: $76.99

Overclocking

With this memory we could increase our CPU external bus (FSB) up to 279 MHz with stability, making the memory modules to run at 1,116 MHz, a 4.69% increase over Corsair’s labeled spec. We could configure our FSB even higher (up to 290 MHz), but the system was unstable. We considered our system stable when we could run PCMark05 and Quake 4 at least four times without crashing.

Since we have an unlocked CPU, we decreased the CPU multiplier from x11 to x10 to make our CPU running at a lower internal clock rate, checking if what was preventing us from pushing the memories even more was the CPU, which could have already reached its overclocking limits. However, the results were just the same, so what was limiting our overclocking was really the memory kit being used.

With this overclocking set, we achieved 116.45 frames per second on Quake 4, a 2.60% increase. Keep in mind, however, that this improvement also reflects the increase on our CPU internal clock rate, since the CPU clock was increased from 2.93 GHz to 3.07 GHz.

The screenshot below was taken with CPU-Z. This program shows the real clock rate for both memory and CPU. Our CPU works externally at 266 MHz transferring four data per clock cycle, thus the labeled 1,066 MHz external clock rate. DDR2-1066 memories work at 533 MHz transferring two data per clock cycle, thus the labeled 1,066 MHz clock rate. On our overclocking, the CPU was running externally at 279 MHz and the memories were actually running at 558 MHz.

Corsair TWIN2X2048-8500C5
Figure 6: Corsair CM2X1024-8500C5 modules overclocked.

Pages (9): « 1 2 3 4 5 6 7 [8] 9 »
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