Can a evga 7900GT KO Superclocked be vmodded?

[turok_t]

The title says it all. I have compared the KO Superclocked and the CO Superclocked and the layout on the back of the card looks DIFFERENT, especially on the area where the vmod is to be done. Just to note, I measured the voltage on the KO Superclocked, and the vcore is ~1.45V. So can the KO Superclocked be voltage modded with the conductive pen method??

[Clint]

I don't know about the mod but if you are considering buying the KO Superclocked (580MHz) card you should stay away from it.

Most of reports I've seen they do only get like 590- 620MHz out of them, and that sucks big time on 1.45V.
eVGA ppl are very sly when it comes to binning their cores, this KO Superclocked is just a way for them to let off the crappy cores at a premium price.They have the best warranty but the worst binning.

Sorry for OT:D

[madgravity34]

Hey man, I have a new revision of the regular superclocked card, actually, I believe I was sent a re-badged signature series card as it had the same cooler and was stock vcore'd in 3d @ 1.45v. Anyways, the main thing to remember with vmods is that the card has the ability to enable the +0.05 and the +0.2v via bios and that is why the stock vcore is 1.45. The only mod you can do is the 1.55v mod and in order to do the 50k res. mod you have to re-flash the bios to 1.2v and disable the the cards 1.45v capabilities. That is pretty much all you need to know.


O and the card I got RMA? It clocks at 710 with a 40mhz GDC and the memory does 900 with stock volts. I have done the 1.55v mod but have yet to test the core past the limit it had @ 1.45v as I have spent the last two months away on vacation.


Hope this helps and if you want a further performance boost on your card and put less strain on the memory voltage circuits by running less memory clocks you should try out my bios in the bios mods section.

[turok_t]

I don't know about the mod but if you are considering buying the KO Superclocked (580MHz) card you should stay away from it.

Most of reports I've seen they do only get like 590- 620MHz out of them, and that sucks big time on 1.45V.
eVGA ppl are very sly when it comes to binning their cores, this KO Superclocked is just a way for them to let off the crappy cores at a premium price.They have the best warranty but the worst binning.

Sorry for OT:D

I already have a KO SC. Mine can hit up to 670-690Mhz on stock volts.

[turok_t]

Hey man, I have a new revision of the regular superclocked card, actually, I believe I was sent a re-badged signature series card as it had the same cooler and was stock vcore'd in 3d @ 1.45v. Anyways, the main thing to remember with vmods is that the card has the ability to enable the +0.05 and the +0.2v via bios and that is why the stock vcore is 1.45. The only mod you can do is the 1.55v mod and in order to do the 50k res. mod you have to re-flash the bios to 1.2v and disable the the cards 1.45v capabilities. That is pretty much all you need to know.


Hope this helps and if you want a further performance boost on your card and put less strain on the memory voltage circuits by running less memory clocks you should try out my bios in the bios mods section.


O and the card I got RMA? It clocks at 710 with a 40mhz GDC and the memory does 900 with stock volts. I have done the 1.55v mod but have yet to test the core past the limit it had @ 1.45v as I have spent the last two months away on vacation.

Thanks for your knowledgable reply. I greatly appreciate it. I see in your sig that u have a CO SC. But mine is a KO SC. Im thinking of giving 0.1V to me SC CO for a total of 1.55v (1.45v + 0.1v). Will i still need to disable the +0.05 and +0.02v in the bios? Cause im not sure how to do that.

BTW, im very interested in your bios.. How will it improve the perofrmance if i lower my memory clocks? Wouldnt it slow it down? Thanks again for all your help man.

[Clint]

I already have a KO SC. Mine can hit up to 670-690Mhz on stock volts.

Sounds like a reasonable result on 1.45V
You got lucky my friend:)

[turok_t]

Sounds like a reasonable result on 1.45V
You got lucky my friend:)

Its not lucky. Think about it, most 7900GTs can hit high 600Mhz and up with 1.55V. So 1.45V can give u a bit less than that.

[t024484]

The title says it all. I have compared the KO Superclocked and the CO Superclocked and the layout on the back of the card looks DIFFERENT, especially on the area where the vmod is to be done. Just to note, I measured the voltage on the KO Superclocked, and the vcore is ~1.45V. So can the KO Superclocked be voltage modded with the conductive pen method??
Look here at posting 66
http://www.xtremesystems.org/forums/showthread.php?t=102275&page=3

[Clint]

Its not lucky. Think about it, most 7900GTs can hit high 600Mhz and up with 1.55V. So 1.45V can give u a bit less than that.

well, I've had 2 eVGA 7900gt that only did 610-620MHz on 1.4V...and 535MHz on stock.
They bin their cards much tighter than the others, lower headroom if you wish.
From what I've learned only XFX and Leadtek pays a bit extra for the better cores, eVGA dont....they instead bin them more agressively.

But hey, thats only my opinion...:D

[madgravity34]

@Turok
Most of the RMA returned 7900gt's seem to have the improved hardware that makes even the regular SC CO the same as the KO SC except with different clocks you see? The SC CO is 550 core stock and the KO SC is 580 so other than that, the boards themselves (at least newer ones) do not show any physical difference.

If you want to do the vmod to 1.55v, then just do the +0.1v and you will get 1.55v without having to mod anything else! I was saying, that if you wanted beyone 1.55v, then you would have to delve into the bios to set the 3d voltage at 1.2v instead of the stock 1.45v.

About my bios, essentially it uses much tighter timings on the memory which gives you better performance with lower clocks, just look at my thread in the bios mods section. Look for MgCustom in the title.

[turok_t]

@Turok
Most of the RMA returned 7900gt's seem to have the improved hardware that makes even the regular SC CO the same as the KO SC except with different clocks you see? The SC CO is 550 core stock and the KO SC is 580 so other than that, the boards themselves (at least newer ones) do not show any physical difference.

If you want to do the vmod to 1.55v, then just do the +0.1v and you will get 1.55v without having to mod anything else! I was saying, that if you wanted beyone 1.55v, then you would have to delve into the bios to set the 3d voltage at 1.2v instead of the stock 1.45v.

About my bios, essentially it uses much tighter timings on the memory which gives you better performance with lower clocks, just look at my thread in the bios mods section. Look for MgCustom in the title.

oh thanks for your input madgravity.. Ya i checked out your bios and maybe ill try it soon. Well, i think its a bios thing now. I got a digital multimeter and my KO SC is reading 1.44V but it is unstable at my intial frequencies of 685/900. I need to drop it back down to 675/880. So here is the thing: My voltage for my KO SC is fine since it is constantly at 1.44V.. The core just doesnt seem to put out as much frequency as before.. MAybe its wearing out? Or maybe there is voltage leakage AFTER i measured it with a voltmeter?? Im not sure, but im gonna change the bios and see what happens first.

[t024484]

oh thanks for your input madgravity.. Ya i checked out your bios and maybe ill try it soon. Well, i think its a bios thing now. I got a digital multimeter and my KO SC is reading 1.44V but it is unstable at my intial frequencies of 685/900. I need to drop it back down to 675/880. So here is the thing: My voltage for my KO SC is fine since it is constantly at 1.44V.. The core just doesnt seem to put out as much frequency as before.. MAybe its wearing out? Or maybe there is voltage leakage AFTER i measured it with a voltmeter?? Im not sure, but im gonna change the bios and see what happens first.
Xtreme is making me mad by removing my pictures after some time.
I will try to reproduce the picture where you can see how to mod the SS from 1.45 to 1.55 Volt. It it just a short line between two points.

[t024484]

Xtreme is making me mad by removing my pictures after some time.
I will try to reproduce the picture where you can see how to mod the SS from 1.45 to 1.55 Volt. It it just a short line between two points.
Here is the picture.
Apply the yellow line with conductive ink or by soldering.
You will then go from 1.45 to 1.55 Volt.

49691

[turok_t]

hey.. here is the difference between a KO and a CO.. KO at the top and CO at the bottom.. the CO, as u can see, is voltage modded.. The 2 PCB look a bit different near the vmodding area:

http://i64.photobucket.com/albums/h167/turok_t/Completed%20Rig/IMG_6846.jpg

[madgravity34]

If you keep the CO vmodded to 1.45 volts, then you can leave the ko alone and both cards will be running 1.45 volts in 3d!!! lol, one less card to mod.

[turok_t]

If you keep the CO vmodded to 1.45 volts, then you can leave the ko alone and both cards will be running 1.45 volts in 3d!!! lol, one less card to mod.

That is what i did, except my CO is at 1.55V.. My KO can still keep up with it... they can both do 685...so i only modded one card

[t024484]

That is what i did, except my CO is at 1.55V.. My KO can still keep up with it... they can both do 685...so i only modded one card
The yellow line I showed was for modding the KO to 1.55Volt. Forget what else is shown on this picture.