Pentium D 820 Overclock w/ The Ninja
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Pentium D 820 Overclock w/ The Ninja
Hi,
I have just installed my Ninja on my pentium D 820 and just putting it through some tests and I am just wondering if the results I am getting are good or should I be looking for something better?
I have overclocked the CPU to 3.7Ghz and on idle it runs @ 47, under load something strange happens. The temperature rises to about 62-64 but the speed automatically drops down to 3.5 - 3.6Ghz according to the AI Booster dashboard.
Why is this happening? I am presuming the CPU is getting to hot and so automatically slowing itself down? I am running it on a Asus P5LD2 motherboard.
Reading some articles it suggests I should be getting better performance so I am thinking maybe I need to resit the heatsink again with some new compound?
Any ideas?
Cheers
Robert
I have just installed my Ninja on my pentium D 820 and just putting it through some tests and I am just wondering if the results I am getting are good or should I be looking for something better?
I have overclocked the CPU to 3.7Ghz and on idle it runs @ 47, under load something strange happens. The temperature rises to about 62-64 but the speed automatically drops down to 3.5 - 3.6Ghz according to the AI Booster dashboard.
Why is this happening? I am presuming the CPU is getting to hot and so automatically slowing itself down? I am running it on a Asus P5LD2 motherboard.
Reading some articles it suggests I should be getting better performance so I am thinking maybe I need to resit the heatsink again with some new compound?
Any ideas?
Cheers
Robert
OK.. some further interesting results...
For some strange reason the Asus AI-Booster utility reports a different core speed to CPU-Z. CPU-Z reports the correct speed?? mmm... Feeling is there is something a bit weird w/ with the Asus util...
Also I have set the CPU V to 1.4V, however under load it comes down to 1.33V. Can someone tell me what the guidelines are for setting CPU Voltages?
For some strange reason the Asus AI-Booster utility reports a different core speed to CPU-Z. CPU-Z reports the correct speed?? mmm... Feeling is there is something a bit weird w/ with the Asus util...
Also I have set the CPU V to 1.4V, however under load it comes down to 1.33V. Can someone tell me what the guidelines are for setting CPU Voltages?
Re: Pentium D 820 Overclock w/ The Ninja
sounds like thermal throtling to me, which is indeed the CPUs way to defend itself from thermal damage.rx2 wrote:Why is this happening? I am presuming the CPU is getting to hot and so automatically slowing itself down? I am running it on a Asus P5LD2 motherboard.
I read somewhere that the 820D throttles at 66c - so what I am seeing is good!
I also have a theory as to why I am seeing differences between CPU-ID and the Asus utility. The Asus utility shows the sum of both cores, whereas CPU-ID is only showing a single core. When the CPU starts to throttle only one core is throttled back hence why the Asus core speed changes - however as the CPU-ID only reports a single core it stays static.
I also have a theory as to why I am seeing differences between CPU-ID and the Asus utility. The Asus utility shows the sum of both cores, whereas CPU-ID is only showing a single core. When the CPU starts to throttle only one core is throttled back hence why the Asus core speed changes - however as the CPU-ID only reports a single core it stays static.
This is a hot running chip that's been overclocked to,I figure,double as a popcorn maker. You don't say what fan,if any,is on the Ninja,or what sort of case flow you have. It's worth mention that an A64 Sempron runs in the low 30C area,around 90F...so,yeah,65C is pretty toasty. Bigger,faster,louder fans,or less overclock,or trade for an AMD,or consider watercool. Take your pick.
yeah it's a toasty little bugger the 820D!
I am using a Antec SLK3000B case, and the fan on the Ninja is a Titan 120mm http://www.titan-cd.com/eng/dcfan/fan.p ... =TFD-12025 running @ 12V giving 79.14CFM.
I am going to take the Ninja of tonight, clean, and reapply some heatsink compound just to make sure everything is good there.
Still not sure whether I can expect to get lower temperatures or not with the 820D toaster? Anyone else got a similar setup?
I am using a Antec SLK3000B case, and the fan on the Ninja is a Titan 120mm http://www.titan-cd.com/eng/dcfan/fan.p ... =TFD-12025 running @ 12V giving 79.14CFM.
I am going to take the Ninja of tonight, clean, and reapply some heatsink compound just to make sure everything is good there.
Still not sure whether I can expect to get lower temperatures or not with the 820D toaster? Anyone else got a similar setup?
Each cpu will be different so there is no answer to that. Try dropping an absurd amount, then halve that till it works and keep halving the difference till it's stable... did that make sense? Anyway running the mprime stress test will usually tell you if the voltage is adequate.rx2 wrote:Anyone have any ideas what the lowest voltage a D820 might work at ?