Tuesday, May 14th 2013

GeForce GTX 680 Can Be Flashed to GTX 770?

No you can't, but read on. When we learned that NVIDIA's upcoming GeForce GTX 770 uses a GPU not unlike the GeForce GTX 680 in specifications, we overlooked one possibility, that it uses the same exact chip, the GK104. We assumed that NVIDIA could release a new ASIC codenamed "GK114" or "GK204," which features higher energy-efficiency, and GPU Boost 2.0.

A Reddit user claims that a simple BIOS flash of the GeForce GTX 680 could turn it into a GeForce GTX 770. The BIOS ROM image, which probably works with reference-design GTX 680 boards was posted, along with a GPU-Z screenshot of a "GeForce GTX 770" obtained this way. The BIOS runs the card at 1059 MHz core, 1125 MHz maximum GPU Boost, and 1752 MHz (7.00 GHz GDDR5-effective) memory, yielding a memory bandwidth of 224 GB/s. The BIOS file can be found here (try it at your own risk). We tested the BIOS with some of our own GTX 680 cards, and found it to be nothing more than a modified GTX 680 BIOS (for increased clocks) with a modified driver INF file that makes the GeForce driver display a different model name. The BIOS just has made-up clock speeds that could run on some GTX 680 cards, but could be unstable on most.

We created four additional GPU-Z screenshots to serve as evidence that just by modifying the INF file, you can make the card appear as anything you want. The string from the INF file is used in Windows for display purposes only; the graphics driver does not use it for anything else; certainly not feature detection.

When your GTX 680 manages to be stable with the new BIOS, the higher clock speeds obviously work to get you that 5-7 percent performance increment. Third-rate companies often get away selling rebranded fake graphics cards in developing markets using this method. For example, they buy cheap GeForce 210 cards and sell them as GT 630 for twice the money. Even between officially rebranded NVIDIA graphics cards (such as GeForce 8800 GT to 9800 GT), the device ID is changed, so there's no reason why NVIDIA won't do the same with the GTX 770. In conclusion, this "GTX 770" mod is nothing more than a combination of a custom GTX 680 BIOS that adds higher clock speeds, and a custom INF file that changes the card's name string.
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84 Comments on GeForce GTX 680 Can Be Flashed to GTX 770?

#1
Relayer
by: HumanSmoke


Me too. Here's a freebee for you. My name appears on the byline and my username at the end of the article. You'll have to dig a little harder if you're looking for my present SA title though.
I'll leave the google searching, etc. to you. You have me confused with someone who cares.
Posted on Reply
#2
Casecutter
by: HumanSmoke
if you're looking for my present SA title
Is it because you're banned using that username... So you mainly blow smoke here for us at techPowerUp... ostracized from other haunts?
Lucky us :cool:
Posted on Reply
#3
Velvet Wafer
by: W1zzard
yup, instead of just deleting the post and facing potential conspiracy theories we decided to clear it up and inform users, which is why tpu exists after all.



it's located in the driver's code. Yes, you could mod the driver, but due to digital signature requirement it wouldn't load anymore unless you make some changes to Windows and NVIDIA would fix it quickly, then the cat and mouse game starts using more and more complicated protections
According to Anatolymik (who did exactly what you described quite a while ago)
his present SLI hack is very difficult to counter, due to the way it is written (pretty low-level and early in boot if i remember)
Before that was possible,Nvidia even had entered some malicious code into their drivers to make systems crash that had the hack installed...intentionally.

So, Hybrid SLI with different cards, and the hack should still be up and running somewhere along these forums,for the people that want to try it out themselves ;)
Posted on Reply
#4
MxPhenom 216
Corsair Fanboy
by: Casecutter
Is it because you're banned using that username... So you mainly blow smoke here for us at techPowerUp... ostracized from other haunts?
Lucky us :cool:
Seriously though. I do not think I have ever seen him post a single thing on this forum that is helpful to anyone. :laugh:
Posted on Reply
#5
HumanSmoke
by: Casecutter
Is it because you're banned using that username... So you mainly blow smoke here for us at techPowerUp... ostracized from other haunts?
Lucky us :cool:
You want to talk about blowing smoke ? How about I put together a little compendium of your supposed versions of events? There's certainly a lot of misinformation to choose from.

Re: that account. I took Charlie/Copper to task for daring to suggest that Chas might actually follow through with getting some articles out regarding Intel's lawsuit failures (AMD, Nvidia specifically)- since his stock answer to anything that could lead to Intel criticism is to sweep it under the rug...oh, and being one of those daring to question the veracity of John Fruehe's (also known as JF_AMD on many forums) claims for Bulldozer, and the subsequent banning of people who questioned his numbers - nothing like having a sig that basically says "Company VP" to help sway the moderators into wielding the banhammer. And my account was very, very far from being the only one chopped.
by: MxPhenom 216
Seriously though. I do not think I have ever seen him post a single thing on this forum that is helpful to anyone. :laugh:
Here, allow me to help out.
You and Casecutter should really torque up the personal baiting- it really becomes you.
Posted on Reply
#6
MxPhenom 216
Corsair Fanboy
by: HumanSmoke
You want to talk about blowing smoke ? How about I put together a little compendium of your supposed versions of events? There's certainly a lot of misinformation to choose from.

Re: that account. I took Charlie/Copper to task for daring to suggest that Chas might actually follow through with getting some articles out regarding Intel's lawsuit failures (AMD, Nvidia specifically)- since his stock answer to anything that could lead to Intel criticism is to sweep it under the rug...oh, and being one of those daring to question the veracity of John Fruehe's (also known as JF_AMD on many forums) claims for Bulldozer, and the subsequent banning of people who questioned his numbers - nothing like having a sig that basically says "Company VP" to help sway the moderators into wielding the banhammer. And my account was very, very far from being the only one chopped.
Just stop posting, anything you are posting has nothing to do with the title of this thread.

"Geforce GTX 680 Can Be Flashed to GTX770"

:nutkick:
Posted on Reply
#7
HumanSmoke
by: MxPhenom 216
Just stop posting, anything you are posting has nothing to do with the title of this thread
Nor does
by: MxPhenom 216
Seriously though. I do not think I have ever seen him post a single thing on this forum that is helpful to anyone. :laugh:
or
by: Casecutter
Is it because you're banned using that username... So you mainly blow smoke here for us at techPowerUp... ostracized from other haunts?
Lucky us :cool:
...for that matter. Why the sudden change of heart ?
BTW:
by: MxPhenom 216
Seriously though. I do not think I have ever seen him post a single thing on this forum that is helpful to anyone. :laugh:

Oops.
Anyhow, I'll take your advice...assuming you take your own that is, and Casecutter can restrain himself from playing wingman.
Posted on Reply
#8
m1dg3t
by: Relayer
I'll leave the google searching, etc. to you. You have me confused with someone who cares.
:roll: +1

No love for trolls :pimp:
Posted on Reply
#9
Casecutter
by: HumanSmoke
can restrain himself from playing wingman
Interesting, how long have you had such a complex?
Posted on Reply