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Overclocking Xeon E5-2665

Overclocking Xeon E5-2665

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68
08-10-2025, 11:04 AM
#1
Hey everyone.
I’m using a Xeon E5-2665 on an Asus Rampage Extreme IV. Next year I intend to upgrade to an I7 3930k or 4930k. At the moment I’m managing a base clock speed of 105MHz, but I’m not very familiar with overclocking. I’m hoping you can offer some guidance. The environment is stable and the PSU should handle 600W easily. Looking forward to your tips.
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chris344574154
08-10-2025, 11:04 AM #1

Hey everyone.
I’m using a Xeon E5-2665 on an Asus Rampage Extreme IV. Next year I intend to upgrade to an I7 3930k or 4930k. At the moment I’m managing a base clock speed of 105MHz, but I’m not very familiar with overclocking. I’m hoping you can offer some guidance. The environment is stable and the PSU should handle 600W easily. Looking forward to your tips.

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Ruubiee17
Senior Member
572
08-17-2025, 12:16 PM
#2
You cannot push the server processors beyond their limits. Their actual performance will match what they are capable of.
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Ruubiee17
08-17-2025, 12:16 PM #2

You cannot push the server processors beyond their limits. Their actual performance will match what they are capable of.

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brobear7
Posting Freak
892
09-02-2025, 05:28 PM
#3
I understand. Non "K" or "X" Intel Processors don't have a fixed multiplier (my own is set to 24). However, it's possible to increase the overall clock speed. When you boost the motherboard base clock—which gets multiplied by the CPU multiplier—you can raise the stock clock from 100 MHz to around 105 MHz. That would mean a CPU speed of about 2.4 GHz. Many people have pushed even higher than that. In my BIOS I see various settings, and I'm not very familiar with their meanings or the core voltage. I was hoping someone could assist me here.
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brobear7
09-02-2025, 05:28 PM #3

I understand. Non "K" or "X" Intel Processors don't have a fixed multiplier (my own is set to 24). However, it's possible to increase the overall clock speed. When you boost the motherboard base clock—which gets multiplied by the CPU multiplier—you can raise the stock clock from 100 MHz to around 105 MHz. That would mean a CPU speed of about 2.4 GHz. Many people have pushed even higher than that. In my BIOS I see various settings, and I'm not very familiar with their meanings or the core voltage. I was hoping someone could assist me here.

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Meowables
Senior Member
608
09-02-2025, 06:56 PM
#4
A 600w psu is sufficient for most current single gpu setups. Ensure you have a good cooler such as the Noctua NH-D15s, or if you have the budget, an H100i v2 liquid cooler to maintain stable performance.
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Meowables
09-02-2025, 06:56 PM #4

A 600w psu is sufficient for most current single gpu setups. Ensure you have a good cooler such as the Noctua NH-D15s, or if you have the budget, an H100i v2 liquid cooler to maintain stable performance.

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Malv3ir0_
Member
207
09-08-2025, 06:57 AM
#5
The CPU temperatures during idle are approximately 45°C, they rise to 63°C with a 105MHz base clock. The cooling solution for the CPU is a budget option (Alpenföhn style), though it works adequately. In demanding situations I plan to upgrade to a liquid cooling system.
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Malv3ir0_
09-08-2025, 06:57 AM #5

The CPU temperatures during idle are approximately 45°C, they rise to 63°C with a 105MHz base clock. The cooling solution for the CPU is a budget option (Alpenföhn style), though it works adequately. In demanding situations I plan to upgrade to a liquid cooling system.

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levoyageur92
Posting Freak
807
09-08-2025, 12:05 PM
#6
it is likely insufficient when using a K series CPU because of increased voltage and frequency.
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levoyageur92
09-08-2025, 12:05 PM #6

it is likely insufficient when using a K series CPU because of increased voltage and frequency.

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Dr_Bull
Junior Member
7
09-08-2025, 07:15 PM
#7
I'll check and see...
But can anyone assist me in extracting more from this CPU?
What adjustments need to be made to reach a higher base clock speed?
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Dr_Bull
09-08-2025, 07:15 PM #7

I'll check and see...
But can anyone assist me in extracting more from this CPU?
What adjustments need to be made to reach a higher base clock speed?