|
Written By:
Date Posted: September 16, 2002
Overclocking
So how high did the Corsair memory reach? Did it make good on its promise of CAS-2 at 166MHz? I'll let the results speak for themselves.
| |
2.57V - Fast Settings |
3.05V - Fast Settings |
2.57V - Turbo Settings |
3.05V - Turbo Settings |
| Generic Nanya PC2700 |
150MHz |
155MHz |
143MHz |
142MHz |
| Corsair PC2700 |
168MHz |
176MHz |
160MHz |
176MHz |
Two quick notes about the memory. The generic RAM would only run at 166MHz if the Command Rate was set to 2. The Corsair memory worked at its specified SPD settings at 166MHz (2-3-3).
So what can we see from the overclocking results? First we see that the generic RAM can't even reach 166MHz, even using the slower 'fast' settings. It seems more like a good batch of overclockable PC2100 RAM and not the PC2700 RAM it's supposed to be. The Corsair memory fairs better, as it manages to reach or pass the 166MHz 'barrier' in three of its four tests. Unfortunately, it 'should' have been able to pass 166MHz without a problem even at the Turbo settings at default voltage. When the voltage is turned up to 3V this stick is able to reach its limits at both 'turbo' and 'fast' settings at the same time. The overclocking of this stick isn't very extraordinary, raising only 16MHz at the maximum in my system.
Synthetic Tests
But does the overclocking results yield any improvements in both synthetic and real tests. Lets first look at some synthetic tests, in SiSoft Sandra and Streamd. We will test the memory at its highest overclock at 'fast' and 'turbo' settings. All results are in MB/s
|
SiSoft Sandra
|
Int. Buffered |
Float Buffered |
Theoretical Bandwidth |
| Generic Nanya PC2700 - Fast 155MHz |
2247 |
2165 |
2480 |
| Generic Nanya PC2700 - Turbo 143MHz |
2100 |
2036 |
2288 |
| Corsair PC2700 - Fast 176MHz |
2318 |
2174 |
2816 |
| Corsair PC2700 - Turbo 176MHz |
2322 |
2186 |
2816 |
|
Stream DOS
|
Copy 32 |
Copy64 |
Scale |
Add |
Triad |
| Generic Nanya PC2700 - Fast 155MHz |
802.61 |
892.11 |
917.43 |
1237.75 |
1043.02 |
| Generic Nanya PC2700 - Turbo 143MHz |
805.84 |
883.98 |
1131.14 |
1190.77 |
1042.8 |
| Corsair PC2700 - Fast 176MHz |
918.75 |
899.13 |
1149.43 |
1246.43 |
1043.02 |
| Corsair PC2700 - Turbo 176MHz |
954.94 |
985.83 |
1312.01 |
1317.96 |
1153.01 |
What do these results show. Well theoretically at turbo settings the Corsair outperforms the generic RAM by 6-16%. Otherwise there isn't much difference between the RAM, though at 155 fast settings, the generic RAM seems to cause a 'hiccup' in StreamD's Scale test as in every other test it outperforms the RAM at 143MHz (Turbo).
Previous Page - Test System/Setup
Next Page - Real World Tests
|
