Page 9 - Overclocking Results
For RAM overclocking, I've set the CPU FSB to memory ratio to 1:2, to ensure that the CPU is not limiting the RAM overclock. The memory voltage used is the highest tolerable value covered under warranty; in this case it is 2.35V. Stability is tested in multi-hour sessions of Orthos Blend testing.
My particular OCZ Reaper HPC PC2-8500 2x1GB is tested to be stable at 577MHz actual clock, or DDR2-1154 (Effective clock). This gives the RAM a rating of PC2-9232 at 5-5-5-15.
This translates to a 8.26% overclock with the Micron D9 based OCZ Reaper HPC PC2-8500. It's quite a decent overclock, considering that this kit already runs at such a high frequency. I've checked overclocking results from other people with the same kit, and it seems that pretty much any PC2-8500 edition of OCZ's Reaper HPC can attain PC2-9200 speed and maybe a bit beyond without much of a challenge.
With a slight voltage increase and timing loosening, I am sure that the Reaper HPC can unleash a little more of its potential.
I was actually quite curious of what kind of latencies we can use stably at PC2-6400 speed. While retaining the same voltage, CAS3 is not a problem with OCZ's Reaper HPC PC2-8500. The lowest latency that I've tested stably is 3-4-4-10; although it is bootable at 3-3-3-8, it is not stable with those specific timings.
Page Index
Page 1 - Introduction, Packaging, Specifications
Page 2 - A Closer Look, Installation, Test System
Page 3 - 3DMark06 Results
Page 4 - PCMark05 Results
Page 5 - EVEREST CPU Results
Page 6 - EVEREST FPU Results
Page 7 - EVEREST Memory Results
Page 8 - SuperPI, Cinebench 9.5, EVEREST Memory Latency Results
Page 9 - Overclocking Results
Page 10 - Conclusion
