680i overclocking thread

[FEEXX]

Hi got a question about Bios settings, How does affect performance to have the memory in SLI mode or not? any noticiable difference just using a single video card??

Thx

[Celcius]

I've also got a question about overclocking on the 680i boards (evga in particular):

By default, under ht multiplier,
nforce spp -> nforce mcp is 5x
nforce spp <- nforce mcp is 5x

What's the max speed these can handle? Meaning, when OCing, can you leave them at 5x or do you eventually have to lower them to 4x, and when?

Also, can the HT spread spectrum be left on or should it be turned off when OCing?

[icon57]

I've also got a question about overclocking on the 680i boards (evga in particular):

By default, under ht multiplier,
nforce spp -> nforce mcp is 5x
nforce spp <- nforce mcp is 5x

What's the max speed these can handle? Meaning, when OCing, can you leave them at 5x or do you eventually have to lower them to 4x, and when?

Also, can the HT spread spectrum be left on or should it be turned off when OCing?

good question, i would like to hear an answer to that also...i keep mine on 4x with a clock of 410x9...but i am not sure what it really does...

[CoNMaN]

tRRD
tRC
tWr
tWTR
tREF
setings for 500+ ram speed???

[lopri]

Interesting! Do you have web space to load your ntune files up to so we can download and try ?

Regards

Andy

I do have space but can't use it right now. But I downloaded nTune and ForceWare drivers from NVDIA.com so the drivers files should be the same. Below is my GPU Overclocking screen.



I think it's just that nTune/NV Control panel is buggy in current state.

[lopri]

I've also got a question about overclocking on the 680i boards (evga in particular):

By default, under ht multiplier,
nforce spp -> nforce mcp is 5x
nforce spp <- nforce mcp is 5x

What's the max speed these can handle? Meaning, when OCing, can you leave them at 5x or do you eventually have to lower them to 4x, and when?

Also, can the HT spread spectrum be left on or should it be turned off when OCing?

You don't have to change HT multipliers. Just leave it at X5. I think it's generally recommended to disable spread spectrum thingy. I disabled them except the SATA spread spectrum, which is set at "Down" something.

[easyrider]

Now at 4ghz!

[LexDiamonds]

I'm loving the evga 680i so far, but I do hit a hard wall at 449fsb. This is with a 626B E6600 conroe. I have seen several other people at this same wall. Hopefully the new bios will fix this.

[Grinch]

so far I am at 445:





p20 bios better be good!

[Grinch]

I have got 1 question...........what memory slots are people running their ram in? Blue/Blue or Black/Black? unless you have 4 sticks....*-)

[X.T.R.E.M.E_ICE]

I have got 1 question...........what memory slots are people running their ram in? Blue/Blue or Black/Black? unless you have 4 sticks....*-)

It is recommended to use blue slots if only using 2 sticks.

[charlie]

680i seems a bit slow at SuperPi, hopefully better at 3D.

[zakelwe]

680i seems a bit slow at SuperPi, hopefully better at 3D.

If you use 1T and have the memory half the FSB speed ( 1:1 in effect) then it is slightly quicker than 975 clock for clock Charlie. You also get the benefit for FM approved drivers for 3dmark of course.

Regards

Andy

[RacerX]

If you use 1T and have the memory half the FSB speed ( 1:1 in effect) then it is slightly quicker than 975 clock for clock Charlie. You also get the benefit for FM approved drivers for 3dmark of course.

Regards

Andy

Personally I would love to see some 1t action. Here's something you 680i guys can compare to. Untweaked XP Pro with everything in my sig. You can use any fsb you like just match cpu speed. I only have a X1800XT so I won't waste my time with 3d.

Question, how high will 1t go?

[zakelwe]

With a bit of luck I should be able to match that exactly with 1T so I will test tonight .. I doubt it will be as fast though, only seems to be better in 3D ..but we shall see.

Regards

Andy

[pentium777]

With a bit of luck I should be able to match that exactly with 1T so I will test tonight .. I doubt it will be as fast though, only seems to be better in 3D ..but we shall see.

Regards

Andy

On my Corsair twin2x-6400c4 @ DDR2-800 I could not do 1T at 4-4-4-12 or 5-5-5-18, 1T gives me thousands of errors in memtest and hangs windows and orthos.

[Mr Dizzy]

New Bios out for EVGA 680i over at there website

[easyrider]

sweet

[NightRaven]

oh yea anyone tested the new bios? p20?

[Badge56]

I downloaded P20 and it installed just fine. Is it better? No idea. I am stuck at 3500...
Need some information on configuring that BIOS....
You guys at 4000..... show us some BIOS settings..

Anyone using Mushkin 6400? DDR800 (green) 5-5-5-18
How high did you them to go?

[MTP04]

oh yea anyone tested the new bios? p20?

After some testing my FSB went from 475mhz to 479mhz x 7. Not very much but still something.

[Blacklash]

Someone mentioned spread spectrum.

SS is for EMI reduction.(That's electromagnetic interference for those unaware.)

System stability and performance may be slightly compromised with SS enabled. Especially with timing critical devices.

For overclocking even a 0.25% jitter can cause a temporary boost in clockspeed which may cause an overclocked processor to lock up.

If you aren't having EMI problems keep it off.

[lopri]

I've got up to 480FSB with my new E6400. (8x480=3840)

[Punisher!]

I've got up to 480FSB with my new E6400. (8x480=3840)

Any stability screenshots?

[lopri]

This for now. Will add more up later on.

FSB 1920


FSB 1900 with tighter timings