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Overclockability Tests (Continued)
Increased Voltage
|
Parameters |
Values |
Unit |
|
Row Active Delay (tRAS) |
6 |
Clock Cycles |
|
RAS-to-CAS Delay (tRCD) |
3 |
Clock Cycles |
|
Row Precharge Delay (tRP) |
2 |
Clock Cycles |
|
Selected DDR Voltage |
2.80 |
V |
|
True DDR Voltage |
2.87 |
V |
Time to put more juice into the memory chips! Even though Corsair never state anything about the modules' operating voltage, they do not recommend going over 2.90V. So, I increase the voltage by 0.2V to 2.80V.
Let's see how they perform with the voltage boost :-
|
CAS 2.0
|
|
CAS 2.5
|
||
|
Memory Clock
|
Results / Comments
|
Memory Clock
|
Results / Comments
|
|
|
400MHz
|
Stable
|
400MHz
|
Stable
|
|
|
406MHz
|
Stable
|
406MHz
|
Stable
|
|
|
414MHz
|
Stable
|
414MHz
|
Stable
|
|
|
420MHz
|
Stable
|
420MHz
|
Stable
|
|
|
426MHz
|
Stable
|
426MHz
|
Stable
|
|
|
434MHz
|
Stable
|
434MHz
|
Stable
|
|
|
440MHz
|
Stable
|
440MHz
|
Stable
|
|
|
446MHz
|
Stable
|
446MHz
|
Stable
|
|
|
454MHz
|
Stable
|
454MHz
|
Stable
|
|
|
460MHz
|
Stable
|
460MHz
|
Stable
|
|
|
466MHz
|
Not stable
|
466MHz
|
Not stable
|
|
|
474MHz
|
Not stable
|
|
474MHz
|
Not stable
|
|
480MHz
|
Cannot boot
|
|
480MHz
|
Cannot boot
|
I'm very impressed by the performance with the additional voltage! 460MHz at 2-3-2-6! That's a 15% or 60MHz increase from the stock speed of 400MHz! At 460MHz, it will have a theoretical bandwidth of 3680MB/s or 7360MB/s when used in a dual-channel system!
This pair of memory modules is amazing! Not many people can even reach this clock speed with their nForce2 motherboards, which is normally limited by the north bridge.
Increasing the CAS latency to 2.5 clock cycles didn't do anything for the modules' overclockability at all! They stuck firmly to 460MHz. These are truly low latency modules, since increasing the CAS latency didn't do any good at all!
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