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Untitled Document
Testing consisted of four different sets of memory, all low latency except
for the A-Data which is branded as "Value RAM". There are more details
on each product in the conclusions, but they are:
- Corsair CMX512-3200XLPRO (TwinX, dual channel matched pair)
- Corsair CMX512-3200LLPT
- OCZ PC4200 Enhanced Latency (dual channel matched pair)
- A-Data PC3200 Value Ram
The aim is not to just demonstrate the speed differences between products,
but also the speed difference that different settings make. This gives us an
excellent overall impression of the impact of low latency memory. To put the products on a more level playing field, they were run
in 512MB configurations for the first
set of tests. This means 1 x512MB, except in the case of the OCZ
which is 2 x 256MB. Benchmarks were also performed on the XLPRO at the downclocked
timings of 3,4,4,8 to give us a base line comparison.
| Configuration |
3D Mark 2003 |
Far Cry (fps) |
Call of Duty (fps) |
% Improvement |
| Corsair XLPRO @ 2,2,2,5 |
7604 |
65.34 |
99.1 |
10% |
| Corsair LLPT @ 2,3,2,6 |
7586 |
64.33 |
98.4 |
8% |
| A-Data @ 2,5,3,3,8 |
7564 |
62.04 |
97.7 |
4% |
| OCZ @ 2.5,4,4,7 |
7523 |
60.37 |
96.4 |
2% |
| Corsair XLPRO @ 3,4,4,8 |
7514 |
59.44 |
96.0 |
0% |
From the results, you can see very little difference from product to product.
The CAS seems to make the biggest difference, rather than the other timings.
Using Far Cry as the comparison for % improvement over CAS3, we saw a 10% improvement going from 3448 to 2225.
The next comparison was performed using the XLPRO memory, this time using
the full 1GB.
| Configuration |
3D Mark 2003 |
Far Cry (fps) |
Call of Duty (fps) |
| Corsair XLPRO @ 2,2,2,5 |
7640 |
68.43 |
99.7 |
| Corsair XLPRO @ 3,4,4,8 |
7565 |
63.69 |
96.9 |
In this case, the difference is 7.5% rather than the 10% seen with 512mb of
memory. The difference between the two extremes (512mb @ 3,4,4,8 and 1GB
@ 2,2,2,5) is a considerable 15%.
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