Benchmarks
With the same board, we overclock a Intel E6550 and observe
the bandwidth and latency. We also set the memory timings tighter at CAS
7,7,7,20,1T. Voltage for the DIMM is raised to 2.16v.
With the E6550 processor, we chose SLI ENABLED in the
BIOS setting of the ASUS Striker II Extreme BIOS 0703. If you take a look at
CPU-Z, a 3:8 ratio is kicked in automatically, forcing the ram to run ASYNC at
DDR3-1776. (~ DDR3-1800). The ram has been set to run in CAS 7,7,7,20,1T. CPU
runs at 6x333MHz.
The system runs fine at this speed. The memory bandwidth is
at 6357/6517. Random access 69ns and speed factor is 44.4.
This shows that if you use a FSB1333 processor with this
module, you would end up losing performance because of the kicked in ratio used.
Instead we can try to increase the FSB to > 1800 and see what happens.
In this test, as we are overclocking the CPU, we turn SLI
memory to DISABLED. Due to the CPU or possibly the chipset, we only managed
to overclock the board up to 6 x 462.5. That gives us a memory of DDR3-1850.
Again, we ran the ram at Cas7,7,7,20,1T.
If you notice, the memory bandwidth increased to 7331/7387.
Latency is 86ns and speed factor is 75.20.
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