Under CAS Latency 4, I was pretty amazed
with the clockspeed obtainable as I needed only 2.0v to scale the RAMs up to 480MHz. 


13a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review

With an additional bump of 0.05v
to 2.05v, I managed to get the clock speed up to 490MHz at
CL4-4-4-12:


14a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review

To ensure the full stability at
500MHz, I decided to run Prime95 and Windows Memtest for 11
hours:


15a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review

Stopped the Orthos test and Windows
Memtest after 11 hours of stress-testing. Passed the test without a single error:


16a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review

I ventured further and the maximum
clock that I could get was 512MHz staying at 2.15v:


17a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review

This memory responds and scales well
with voltage. And what I can noticed is that in order to get an additional
10MHz bump in clock speed, an additional 0.05v was needed to stabilize the
Memory.


18a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review


19a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review


21a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review


23a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review


25a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review

At 595MHz at CL4-4-4-12
at 2.65v
, I failed to complete SuperPi 4 Million run:


26 OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review

 

In order to complete the run in
SuperPi 4 Million, I had to loosen the Read Delay (tRD) from 6 to 7 using Memset 3.2:


27a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review

And the maximum clockspeed I
went with this Reaping pair, at CL4-4-4-12 – 600MHz: stable enough for a
Superpi 1M run but not much more.


42a OCZ Reaper HPC Edition 2GB (2 x 1GB) DDR2 1150 Review