Overclocking question.

Casheti · Oct 4, 2007

Using TechPowerUp's GPU-Z I have discovered that only my X850XT has been overclocked, and not my Crossfire Edition.

Have I been creating problems for myself by clocking the slave faster than the Master?

Thing is.. I can't choose which one to OC. ATi Tray Tools doesn't give that option.

panchoman · Oct 4, 2007

nope, x-fire will always run based on the weakest/slowest card. same goes for sli and raid.

Casheti · Oct 4, 2007

I don't understand, are you saying OC'ing the slave and not the master is okay?

Both Cards have same stock clocks.

sneekypeet · Oct 4, 2007

I have thought about this myself with my SLI setup...The only real way to OC both cards is to individually test them. Find a good number for both cards core/mem , and flash both to those clocks.

Cant really see it doing any harm as long as the clocked card handles those speeds!

Hawk1 · Oct 4, 2007

I think for Crossfire they run at whatever the lower cards clock speed is (ie-you can crossfire a 1950xtx with a 1900 crossfire master, but will they will both run at the 1900's speed). I don't think it has any ill effects.

Casheti · Oct 4, 2007

Lol but my point is they're not both running at the same clocks, one is faster than the other.

Isn't that bad?

Hawk1 · Oct 4, 2007

Casheti said:
Lol but my point is they're not both running at the same clocks, one is faster than the other.

Isn't that bad?

Performance wise, yeah, your not getting the use out of the one OC card when in crossfire. Hardware wise they will be fine.

I think there was a way to overclock both for crossfire, but not sure how (I dont OC my GPU). I think Damulta would know.

panchoman · Oct 4, 2007

sli operates @ the speed of the slowest one.

Casheti · Oct 4, 2007

Yes but it is not operating at the speed of the slowest one, people please understand, they are running DIFFERENT clocks.

I guess I may as well just push the slave back down to stock and call it a day.

ace80 · Oct 4, 2007

Can't you oc both your x850's using ati tool? Settings>Use Device - select card

Its what i do and seems to work.

Casheti · Oct 4, 2007

I will try ATi Tool instead and see what happens.

sneekypeet · Oct 4, 2007

hey cash why not do as i suggested and clock them individually to find a good max that both will do well , then flash those speeds to the cards?

Casheti · Oct 4, 2007

Ha I don't trust myself flashing, I don't fancy bricking anything.

And Fuse-Wire wants to buy my PC, so I don't want to mess it up for him.

Casheti · Oct 4, 2007

Okay so if I use ATiTool to OC each card individually, do both card's clocks get saved in one profile?

ace80 · Oct 4, 2007

no, you have load that profile to each card individually.
Just make sure each card can handle the clocks

Casheti · Oct 4, 2007

Right-O. Thanks.

ace80 · Oct 4, 2007

Also 3d detection will not work, as it can't do it for both cards.
So every time you game or bench load them manually

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Processor	E6600@3.6Ghz (8x450)
Motherboard	Commando
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Memory	2GB Ballistix Tracers @900 4-4-4-12
Video Card(s)	ATI X1950XTX w/TR HR-03
Storage	2 x WD250GB (RAID0) 1x WD150GB Raptor 1x500GB external
Display(s)	Dell 24" Ultrasharp
Case	TT Armour
Audio Device(s)	Xfi xtreme Gamer (X-230s/HD595s)
Power Supply	TT 750W modular
Software	xp pro SP2/Vista Ultimate 32

Processor	Amd Athlon X2 4600+ Windsor(90nm) EE(65W) @2.9-3.0 @1.45
Motherboard	Biostar Tforce [Nvidia] 550
Cooling	Thermaltake Blue Orb-- bunch of other fans here and there....
Memory	2 gigs (2x1gb) of patriot ddr2 800 @ 4-4-4-12-2t
Video Card(s)	Sapphire X1950pro Pci-E x16 @stock@stock on stock
Storage	Seagate 7200.11 250gb Drive, WD raptors (30/40) in Raid 0
Display(s)	ANCIENT 15" sony lcd, bought it when it was like 500 bucks
Case	Apevia X-plorer blue/black
Audio Device(s)	Onboard- Why get an sound card when you can hum??
Power Supply	Antec NeoHe 550-manufactured by seasonic -replacement to the discontinued smart power series
Software	Windows XP pro SP2 -- vista is still crap

Overclocking question.

Casheti

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panchoman

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