OC question

[Jerboy]

How much difference would I see in SETI WU performance between:


1.4GHz Tbird @ 1.485GHz, 135MHz MHz FSB and 1.4GHz TBird @ 1.4GHz, 133MHz FSB? my computer isn't as stable as I want it to be and I'm thinking about putting my processor back to normal speed.


oh and my DDR RAM is in 2.0-2-2CL mode. Would it hurt to drop CL to 2.5?

 

[Factor5]

the difference between 1.485 and 1.4 will be approx 5-10 min..... but dont drop that CAS... it will destroy your WU time. Hope this helped.

 

[MoFunk]

Well since you will be more stable then drop it down. Being that it is 85Mhz you may not notice that big of a drop. What is your system doing? How is your cooling. Boy this could turn into a topic for the OC fourm real quick! 😉

 

[Baldy18]

If stability is a problem then deffinetly dop the FSB it should only affect you for about a 5-10 minute increase in times. However, changing the CAS latecy will have a dramatice affect on your times. I haven't checked it out or anything but I would think up to a 20 minute difference could result from changing the CAS latency to 2.5.

 

[Migroo]

Seti Timer suggests a 19 minute change (for the worse) given the same angle range.

Do it if it will make it more stable 🙂

 

[Fardringle]

Just for reference, I'm running at 1.4Ghz Tbird on an ECS K7S5A with DDR ram running at CAS2. My average time at 1.4Ghz was 4:42. My average at 1.45Ghz (138Mhz BUS - motherboard won't do anything higher) is 4:30. You'll lose maybe 1 WU per week by dropping it back to default speed, and system stability is probably worth it.

p.s. 1.485Ghz is actually a 141Mhz BUS.. 😉

 

[Jerboy]

<< Just for reference, I'm running at 1.4Ghz Tbird on an ECS K7S5A with DDR ram running at CAS2. My average time at 1.4Ghz was 4:42. My average at 1.45Ghz (138Mhz BUS - motherboard won't do anything higher) is 4:30. You'll lose maybe 1 WU per week by dropping it back to default speed, and system stability is probably worth it.

p.s. 1.485Ghz is actually a 141Mhz BUS.. 😉 >>




Nope. 135x11=1485

 

[Fardringle]

Why run at a multiplier of 11? It would be faster at the same overall speed with a higher FSB and the default multiplier of 10.5. Of course, if you're not stable at even 135Mhz BUS speed, that may be a moot point.. 🙂 Try setting the multiplier back to 10.5 and see how high the BUS speed will go and still have a stable system. Once you find your best FSB overclock, then go ahead and see how high the multiplier will go without sacrificing stability...