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PSU holding back overclock?

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August 28, 2009 3:15:41 AM

hi guys,

i build this pc a month ago.

antec earthwatts 380w
4670
gigabyte X48-DS5
2 gb RAM
700gb green HD
e7400 2.8 ghz
stock cooler
2 case fans

soo... i have been overclocking my pc when i got it a month ago. i have over clocked my cpu from 2.8 ghz to 3.2 ghz.
306 x 10.5
i forgot what vcore im running right now. im think im still using the default vcore

lowest temps are 30' highest is 56'
but when i raise the FSB a little more higher. i tried 316, 312, 324. the pc would run but its not stable. but i raised vcore to the safest limit and adjusted fsb but i still have BSOD. i ran some tests and the temps are fine. highest would be 61'. but i would get the occasional BSOD, specially at start up. but at 306 the system is totally stable and i haven't got any BSOD. im on 306 for about 3 weeks now and really stable.

so my question is. would buying a new PSU maybe antec, ocz, or corsairs that are crossfire ready and maybe 700+ watts. will it make my overclock higher. not considering the temps. i know the temps are a limit too. but would i make my overclocking higher?

thanks!
a b ) Power supply
a b K Overclocking
August 28, 2009 4:00:30 AM

RAM

set your RAM to FSB ratio at 1:1 and loosen the RAM timings as much as you can.
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August 28, 2009 4:45:44 AM

megamanx00 said:
RAM

set your RAM to FSB ratio at 1:1 and loosen the RAM timings as much as you can.


ram? i can't raise the the fsb to 400 anymore. can you lower your ram's FSB? is it really ram?
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Related resources
a c 144 ) Power supply
a c 197 K Overclocking
August 28, 2009 12:52:25 PM

Yes, it is probably the RAM, followed by cooling.

Go to the System Memory Multiplier and take it off AUTO and set it to the first 2.0 that you see. That will set your FSB to RAM ratio to 1:1. That way, when your FSB is at 300 MHz, you memory clock will be 600 MHz, well under DDR2-800 speeds.

If you leave the multiplier on AUTO, and you are running at 300 MHz FSB and the memory SPD chip detects DDR2-800 RAM, your memory is actually running at (300/266)*800 or about at DDR2-900 speed.
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Overclocking since 1978 - Z80 (TRS-80) from 1.77 MHz to 2.01 MHz

The memory frequency will automatically follow the CPU Host Frequency (what Gigabyte calls the FSB).

And if you plan on trying to push your overclock higher, you should invest in better cooling.
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August 28, 2009 3:38:10 PM

hmm.. k ill try this.
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August 28, 2009 3:54:31 PM

so. im now running on 326 x 10.5

i took the the system memory multiplier off of Auto and put it on 2.00A.

now its running at 326 mhz FSB and the ram is at 652. i havent made some tests. ill do some later and ill post what i get.

how do you loosen the ram timings? which do you loosen? the standard ram timings or the advanced ram timings? im not sure if its called advanced ram timings.

my standard timings are:

5-5-5-18
1.9V

so how do i loosen it? just take it off the auto setting and lower those numbers? should i adjust some voltage or something? how will i know if im doing it right?

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a c 144 ) Power supply
a c 197 K Overclocking
August 29, 2009 4:37:41 PM

It seems counter intuitive, but you loosen the memory timings by increasing the numbers. The numbers are multiples of processor cycles. Bigger numbers means more time for the memory to stabilize. I'd go to something like 6-6-6-20 and make sure the RAM voltage is set to 1.9 volts.

With the Gigibyte motherboards you do that by changing the SystemVoltage Control to [Manual] and setting the DDR2 Overvoltage Control to [+0.10 Volt] (0.10 volt over the default 1.8 volts).

here are a couple of stickies you should read:
HOWTO: Overclock C2Q (Quads) and C2D (Duals) - Guide v1.6.1
http://www.tomshardware.com/forum/240001-29-howto-overc...

Core 2 Quad and Duo Temperature Guide
http://www.tomshardware.com/forum/221745-29-core-quad-t...

This is for a GA-EP35-DS3L, but all the Gigabyte BIOS's are similar:
http://www.tomshardware.co.uk/forum/245679-11-guide-ove...

The information here plus what you learned by trial and error should leave you good to go.
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August 29, 2009 10:28:45 PM

jsc said:
It seems counter intuitive, but you loosen the memory timings by increasing the numbers. The numbers are multiples of processor cycles. Bigger numbers means more time for the memory to stabilize. I'd go to something like 6-6-6-20 and make sure the RAM voltage is set to 1.9 volts.

With the Gigibyte motherboards you do that by changing the SystemVoltage Control to [Manual] and setting the DDR2 Overvoltage Control to [+0.10 Volt] (0.10 volt over the default 1.8 volts).

here are a couple of stickies you should read:
HOWTO: Overclock C2Q (Quads) and C2D (Duals) - Guide v1.6.1
http://www.tomshardware.com/forum/240001-29-howto-overc...

Core 2 Quad and Duo Temperature Guide
http://www.tomshardware.com/forum/221745-29-core-quad-t...

This is for a GA-EP35-DS3L, but all the Gigabyte BIOS's are similar:
http://www.tomshardware.co.uk/forum/245679-11-guide-ove...

The information here plus what you learned by trial and error should leave you good to go.


ah! thanks man! ill do these right now. and ill post if my systems is stable. FYI still running on 326 FSB for 2 days no BSOD's

so..no need to upgrade my PSU? unless of course i add another videro card or more hardware.
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August 29, 2009 10:38:09 PM

there. i just did all those. lowest temp i got now is 33'. haven' run any tests yet.
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!