8800GT bios for better overclocking! *test*

[GaS]

Without raising Vgpu you won't go any further..

[counsol]

I was wondering, since my ram overclock is so (even 905) is not stable, would using a pencil marking along the edges of the resistors on bottom of vid card increase the voltage to the ram?

[Renegade5399]

Have you tried the BIOS in the first post? It relaxes the RAM timings and should help with the OC.

[Truckchase!]

Have you tried the BIOS in the first post? It relaxes the RAM timings and should help with the OC.

Does that really make it faster tho? On my ATI testing I didn't see much perf difference on relaxed timings + faster clock vs. tighter timings + slower clock. (both x1900xtx and x2900xt)

[Diverge]

I just noticed something i thought was kinda odd. Some peoples 'Exact Mode - Extra Voltage' is blank, mine is blank as well. but if you select hex view, you'll see the actual value.

Example, my EVGA 8800GT SC (650MHz), has a hex value of 0x82. which is 130 in decimal... in other words it's set to 1.3V. actual voltage is probably not that... but it is still kinda odd that it's set to that. so if it is set to an un-supported voltage, like 1.3, does it default down to 1.1V or default to something else? i guess checking with a volt meter would tell us.

In the pic below, is my cards default settings, read from the bios (bottom).. and EVGA SSC (top), read from a dump... that i was playing with to compare differences. it's default was 1.05V or 0x69, i was just playing around with it to see how the adjustments change the hex value.

kinda odd, huh?

[r4st4m4n]

I just noticed something i thought was kinda odd. Some peoples 'Exact Mode - Extra Voltage' is blank, mine is blank as well. but if you select hex view, you'll see the actual value.

Example, my EVGA 8800GT SC (650MHz), has a hex value of 0x82. which is 130 in decimal... in other words it's set to 1.3V. actual voltage is probably not that... but it is still kinda odd that it's set to that. so if it is set to an un-supported voltage, like 1.3, does it default down to 1.1V or default to something else? i guess checking with a volt meter would tell us.

In the pic below, is my cards default settings, read from the bios (bottom).. and EVGA SSC (top), read from a dump... that i was playing with to compare differences. it's default was 1.05V or 0x69, i was just playing around with it to see how the adjustments change the hex value.

kinda odd, huh?

According to Mavke (I think is the developer of Nibitor), the only things that the card recognize is the VID number between 1 to 4. 4 = 1.1V, 3 = 1.05V, ...
When you see in nibitor 1.1V, this only a label that nibitor make correspond to a VID but this label is only internal to nibitor and it's not taken from the bios.

So it is not possible to go higher than 1.1V since the card doesn't recognize other VID. This has been confirmed by Jason who tried to set the VID to 5, but as result the card reverted to a lower value, probably 1.05V.
Some people also tried to change the label in nibitor but as explained later by mavke, it didn't do nothing. It was also confirmed by the multimeter.

So I'm not sure what hex value you are reading but it is not the Vcore value. All the explanation above can be found in the previous posts. Check for Mavke's one.

And as you can see in the image below, the part of the bios you are reading doesn't seem to be a part of the voltage table:

[Diverge]

According to Mavke (I think is the developer of Nibitor), the only things that the card recognize is the VID number between 1 to 4. 4 = 1.1V, 3 = 1.05V, ...
When you see in nibitor 1.1V, this only a label that nibitor make correspond to a VID but this label is only internal to nibitor and it's not taken from the bios.

So it is not possible to go higher than 1.1V since the card doesn't recognize other VID. This has been confirmed by Jason who tried to set the VID to 5, but as result the card reverted to a lower value, probably 1.05V.
Some people also tried to change the label in nibitor but as explained later by mavke, it didn't do nothing. It was also confirmed by the multimeter.

So I'm not sure what hex value you are reading but it is not the Vcore value. All the explanation above can be found in the previous posts. Check for Makve's one.

And as you can see in the image below, the part of the bios you are reading doesn't seem to be a part of the voltage table:

I'm not saying that the card does anything with the default settings of my bios.. but it still says what it says in hex, which is 0x82 which coverts to 130 in decimal. change it to:

0.95V, and it reads 0x5F @ 0xBFD1 - (095 decimal)
1.00V, and it reads 0x64 @ 0xBFD1 - (100 decimal)
1.05V, and it reads 0x69 @ 0xBFD1 - (105 decimal)
1.10V, and it reads 0x6e @ 0xBFD1 - (110 decimal)

those are the only options you can pick.

My card has this field blank, from EVGA

it reads 0x82 @ 0xBFD1, which converts to 130 in decimal

that's what i find odd. that it is set to 1.3V by evga.

[mrkarate]

if I use the first post bios, may can i past 960 ram frecuency??, but, use another vendor bios, can cause a useless vga?? is dangerous?? , and if not, I have to use that bios with the default bios vendor? or I change with mi vga vendor? (xfx instead of Sparkle)


thanks!

[nuttah]

I'm not saying that the card does anything with the default settings of my bios.. but it still says what it says in hex, which is 0x82 which coverts to 130 in decimal. change it to:

0.95V, and it reads 0x5F @ 0xBFD1 - (095 decimal)
1.00V, and it reads 0x64 @ 0xBFD1 - (100 decimal)
1.05V, and it reads 0x69 @ 0xBFD1 - (105 decimal)
1.10V, and it reads 0x6e @ 0xBFD1 - (110 decimal)

those are the only options you can pick.

My card has this field blank, from EVGA

it reads 0x82 @ 0xBFD1, which converts to 130 in decimal

that's what i find odd. that it is set to 1.3V by evga.

I have an elite group 8800gt and my bios also is blank at that spot. Have u tried a multimeter?
Have you tried making it 1.1v and flashing? Any changes in OC?

[r4st4m4n]

I'm not saying that the card does anything with the default settings of my bios.. but it still says what it says in hex, which is 0x82 which coverts to 130 in decimal. change it to:

0.95V, and it reads 0x5F @ 0xBFD1 - (095 decimal)
1.00V, and it reads 0x64 @ 0xBFD1 - (100 decimal)
1.05V, and it reads 0x69 @ 0xBFD1 - (105 decimal)
1.10V, and it reads 0x6e @ 0xBFD1 - (110 decimal)

those are the only options you can pick.

My card has this field blank, from EVGA

it reads 0x82 @ 0xBFD1, which converts to 130 in decimal

that's what i find odd. that it is set to 1.3V by evga.

Oh, ok. sorry I misunderstood your post.

It would be interesting to measure how much volts you get with the odd bios.

[GaS]

You ppl talk too much. Just use the voltmeter and read the voltage..

[mrkarate]

if I use the first post bios, may can i past 960 ram frecuency??, but, use another vendor bios, can cause a useless vga?? is dangerous?? , and if not, I have to use that bios with the default bios vendor? or I change with mi vga vendor? (xfx instead of Sparkle)


thanks!

[GaS]

This is only the deviceID/vendorID, nothing harmful.. You can also download your BIOS from your gfx, and edit it. Correcting timings in BIOS is easy. Not

[theonlybabyface]

So...I've edited my BFG OC bios to add the extra 1.1 v and changed vid3 to 1.1 v as well. I've also edited my vram timings to that of the bios on the first page and set the default clocks to 700/1750/900 (stable clocks for me). So do you think that all should be OK flashing??? The goal here is:

1 - add the 1.1 v for extra clearance
2 - set my oc clocks at the bios level
3 - loosen my vram timings in hope of increasing vram clocks

Thoughts?

[heikis]

So...I've edited my BFG OC bios to add the extra 1.1 v and changed vid3 to 1.1 v as well. I've also edited my vram timings to that of the bios on the first page and set the default clocks to 700/1750/900 (stable clocks for me). So do you think that all should be OK flashing??? The goal here is:

1 - add the 1.1 v for extra clearance
2 - set my oc clocks at the bios level
3 - loosen my vram timings in hope of increasing vram clocks

Thoughts?

the same as i did, except i dint touch the ram timings. it overclocks nicely at 950MHz- I havent tried more and probably wont try more.

[mrkarate]

someone flash with the first post bios (lower timmings) and make more oc to ram frequency?, it´s working?

[theonlybabyface]

the same as i did, except i dint touch the ram timings. it overclocks nicely at 950MHz- I havent tried more and probably wont try more.

Unfortunately, my ram doesn't clock very well so I'm hoping that the looser timings will make a difference.

[Diverge]

someone flash with the first post bios (lower timmings) and make more oc to ram frequency?, it´s working?

read the whole thread, you might just see someone's results.

[smsmasters]

I can overclock my Inno3d 8800GT RAM to 1050MHz, should be safe right?

[Renegade5399]

What I did was take the eVGA 8800GT SSC BIOS, changed the voltage to 1.1v, and flashed it to my Palit. Since the card is more than stable at 700/1750/1000, the SSC BIOS is fine. But without changing the RAM timings 1000 is it for the RAM. I then took the same BIOS, changed the timings to the ones from the first post and now the RAM will go to 1044 no issues. Not much, but it helps.

[Hazaro]

Tossing in more data for you guys:

eVGA SC 8800GT default BIOS & no OVP mod.
Crysis (15 hours) / ATiTool (150mins) Stable: 713/1728/945
Cod4 / UT3 (2+ hours) / 3Dmark06 Stable: 740/1890/1018

1.111V idle desktop
1.149V Crysis medium settings
1.151V Crysis high settings

*Craftsman 82344 Digital Multimeter

[mrkarate]

I use the first post bios mems timmings, and 1,1v and nothing... my mem´s don´t go up to 960...

[breakfromyou]

read the whole thread, you might just see someone's results.

We should have an "official modded 8800gt results" thread.

also, a step by step explanation of how to do all this stuff.

[r4st4m4n]

I can overclock my Inno3d 8800GT RAM to 1050MHz, should be safe right?

Jonnyguru said on another forum that something bad will happen if you go over 950 for 24/7 use. But he didn't give much explanation on that, just that it was the reason why many facturers don't OC the mem higher than that.

Well, now that we have more OC results, we can see that on many boards, the RAM doesn't clock well. Many users here doesn't seem to be able to reach 1000, the average being more in the 950. And the one reaching 1000 can go much higher.

So now I wonder if the manufacturers doesn't clock the mem higher simply because the mem chips are

[Hazaro]

Jonnyguru said on another forum that something bad will happen if you go over 950 for 24/7 use. But he didn't give much explanation on that, just that it was the reason why many facturers don't OC the mem higher than that.

Well, now that we have more OC results, we can see that on many boards, the RAM doesn't clock well. Many users here doesn't seem to be able to reach 1000, the average being more in the 950. And the one reaching 1000 can go much higher.

So now I wonder if the manufacturers doesn't clock the mem higher simply because the mem chips are

He said something of a snippet from a certain XFX employee, and even said not to take it too far. Something that running over 1000MHz might degrade the RAM chip or whatever...

Since bandwidth does not matter to me I leave it down at 945, highest I have tried was 1018, but have not tried higher.