Overclocking I – Dual-Core E6750 at 3.00 GHz
Our sample of the Intel Core 2 Duo E6750 (G0-stepping) uses a stock core voltage of 1.3500 V. We have also seen CPUs that run at lower default voltages, meaning there are better CPUs out there from an overclocking perspective.
Since the maximum multiplier that can be selected in the BIOS is 8x, we need to increase the FSB speed for our overclocking endeavours.
In order to overclock our processor to 3.00 GHz, we raised the front-side bus speed from 333 MHz to 375 MHz. Thanks to the processor’s G0 stepping, it does not need a voltage boost to reach this frequency. We used Prime95 to test the CPU’s stability, putting a load on both cores.
Using the overclocked FSB, we can run the memory at DDR2-900 using the 2.40x memory multiplier.
| CPU Frequency | 3.00 GHz (+12.8 %) |
| FSB | 375 MHz (1500 QDR) |
| Core Voltage | Default |
| Memory Multiplier | 2.40x |
| Memory Frequency | DDR2-900 (450 MHz) |
| Memory Latency | CL 4.0-4-4-12 |
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so what you just said, is the newer stuff is better
i dont know why they take 10 pages to show what can be said in 1 page + a few graphs
On top of that Crysis is meant to be very cpu dependant and prefers 4 cores - it's the way things are going
Hmm, if they'd have gone for a different motherboard they could have gotten the q6600 to 3.6 on air.
Dunno if you have a duff chip or mobo. I have a Q6600 and exactly the same cooler and I can do 3.41 GHz at stock voltage on a Gigabyte 965P-DS3P.
"Its stock clock speed is 2.4 GHz, which it operates at using a comparatively low core voltage of 1.3125 Volts – the lowest core voltage available for this chip"
Wrong my Q6600 is 1.26V although it runs slightly higher in practice.
http://i152.photobucket.com/albums [...] s/Quad.jpg
I guess this shows how OC'ing can vary depending on luck. Even hand picking the best S numbers is no guarantee. A bit of luck (unless you have deep pockets) can be key.
Fortunately for myself, my Q6600 is 1.28v core, and hits 3.6GHz with only slight bump.
Indeed electron migration is a significant issue at high Vcore but realistically most of us overclocking are probably running 6-12 month cycles on our hardware (at least from my experience) and the cost of killing a mid range part every year against taking a top end part is still more cost effective.
That's given only one CPU in the past 15 that I've OC'd have failed (possibly luck?) on me and that was due to a faulty voltage regulator on my motherboard
Very nice review/test. Highly informative. I was gonna buy a 6850 or a quad core but now im just gonna grab the low cost msi board and a 6750 and spent my cash elsewhere.
question, you end up recommending the MSI motherboard, but the test system states that you used the gigabyte for the test. Will i be able to get the same clocking abilities with the MSI?