Public Service Announcement: eVGA BIOS v 2.0 adds 15mhz to my 7800GT overclocks

[Deleted member 4644]

I finally got my eVGA RMA card in the mail, plugged it in, and OCed it right away.

It OCed to 475 stable on the core. I then tried flashing it with the new v2 BIOS and it now overclocks to 490 stable.

The BIOS can be found on the eVGA main site. Good luck, and please do not attempt if it you do not know the dangers associated with BIOS flashes.

 

[SunnyD]

YMMV as always. Gratz on 15MHz tho.

 

[fbrdphreak]

Interesting indeed....

 

[Elfear]

Did they change the geometry delta or something?

 

[PrayForDeath]

The title is kinda misleading, I thought they added 15Mhz on stock settings with the new BIOS.

 

[lavaheadache]

Originally posted by: PrayForDeath
The title is kinda misleading, I thought they added 15Mhz on stock settings with the new BIOS.

Yeah thats what I thought too

 

[w00t]

why is it that big of a deal?

 

[Phluxed]

Cuz.. It makes the card faster..

I wonder what a CO version would get with the new BIOS? Would it be enough to match a 256 GTX?

 

[Deleted member 4644]

Originally posted by: w00t
why is it that big of a deal?

Mainly it's a big deal because two of the 7800GT's internal clocks only increment at 27mhz bursts. So if you are stuck between multiples of 27, you are in fact not increasing your speed even if you OC the first core clock.

Thus, a 15mhz increase for me might actually translate to a 27mhz or greater increase for some people. Of course, it might be a random fluke on my card -- but I wish you luck if you want to try.

 

[aatf510]

The removed the 40MHz geometry delta in BIOS v.2.
Therefore your card should be slower now.
Also, they removed the different 2D and 3D clock.
It was 275MHz in 2D and 445MHz in 3D in the original BIOS with fan settings set @ 28% for 2D and 43% for 3D.
This is actually a much worse BIOS because the cards now
consume more power (I have verified this with my Kill-A-Watt)
become noiser & SLOWER.
eVGA released the BIOS because some people were having stability problems with the highly overclocked geometry clock (where a lot of the peformance come from), and they claim that having the same clock in both 2D & 3D would increase stability.

 

[fbrdphreak]

Originally posted by: toattett
The removed the 40MHz geometry delta in BIOS v.2.
Therefore your card should be slower now.
Also, they removed the different 2D and 3D clock.
It was 275MHz in 2D and 445MHz in 3D in the original BIOS with fan settings set @ 28% for 2D and 43% for 3D.
This is actually a much worse BIOS because the cards now
consume more power (I have verified this with my Kill-A-Watt)
become noiser & SLOWER.
eVGA released the BIOS because some people were having stability problems with the highly overclocked geometry clock (where a lot of the peformance come from), and they claim that having the same clock in both 2D & 3D would increase stability.

And how do you know this?

 

[Budarow]

Originally posted by: fbrdphreak

Originally posted by: toattett
The removed the 40MHz geometry delta in BIOS v.2.
Therefore your card should be slower now.
Also, they removed the different 2D and 3D clock.
It was 275MHz in 2D and 445MHz in 3D in the original BIOS with fan settings set @ 28% for 2D and 43% for 3D.
This is actually a much worse BIOS because the cards now
consume more power (I have verified this with my Kill-A-Watt)
become noiser & SLOWER.
eVGA released the BIOS because some people were having stability problems with the highly overclocked geometry clock (where a lot of the peformance come from), and they claim that having the same clock in both 2D & 3D would increase stability.

And how do you know this?

I didn't confirm my 7800GT BIOS, but after returning 2 faulty cards (1 with artifact central and 1 DOA) and receiving the 3rd card (which works fine), I noticed a decrease of ~2 FPS running Doom3 Timedemo Demo1. So I'm guessing EVGA reduced the geometry delta to ensure my 3rd replacement card would work out-of-the-box.

LordSegan....was your replacement card NEW or did it appear used (e.g., lots of smudges on the HS/fan along with fine scratches)? Both my replacement cards appeared to be "used".

 

[aatf510]

Originally posted by: fbrdphreak
And how do you know this?

I have spent sometime in the eVGA.com forum when I ran into problems with my 2 x regular eVGA 7800GTs, and my friend's eVGA 7800GTs CO.
I also have a collection of 4 out of 5 total(std & CO) of eVGA 7800GTs BIOS including the GT Rev. 1, Rev. 2, CO-Rev.2, Rev. 3 BIOS.
All the clockspd/delta clock, fanspeed & voltages in the BIOS can be viewed with NiBiTorv25.

 

[rahzel]

yup, toattett is right.

i also spent sometime on the EVGA boards because i was getting artifacts with my EVGA 7800 GT. EVGA released a BIOS Update removing the geometric clock of 40mhz, which is why some people were getting artifacts.

this is pretty old news... there were atleast 3 threads discussing the new BIOS. The rev.2 BIOS was released like last month.

also, i dont think the GT's internal clocks burst at 27mhz, i think its 13.5 for the GT's. the GTX's burst at 27mhz.

EVGA also just released new BIOS updates for the entire GT line, but im not exactly sure what the difference between the new BIOS and the Rev.2 BIOS is, because EVGA already removed the geometric clock with the Rev.2 BIOS. i asked what the differences are, but no one answered me.

 

[vikingblade]

ive also spent a fair time at the evga forums, since im planning an evga purchase very soon. i originally intended on the 7800gt co...it looked like the best deal around. however, after seeing alot of people with problems that even the bios didnt always fix, im now leaning to the gtx. seems like the gt is an unstable board. so many people with trouble...not all, but alot.