Razor 116

Gotcha.

- - - Updated - - -

That's true to a certain extent. You are forgetting to take into account that less heat is spread out to the VRM's by going to water or even better air cooler so it does result in higher overclocks and stability - many Titan owners have discovered this and went from say 1202 to 1230+ overclocks with an unlocked vbios - not a huge gain but at those frequencies 2 steps higher can give the edge in a benchmark contest. With my Titans for example, if I shut down my case fans and purposely restrict air flow by reducing the GPU fan as well, my max overclock drops by 2 steps (26 MHz) and the cards barely make it through a benchmark run stable. Conversely, keeping the voltage the same, if I push the case fans + GPU fan to 100% I can raise the max OC by 26+ MHz and it is also much more stable.

I assume this is only in becnhmarks.

From what I can tell these guys are running ACX vbios on a reference 780 due to quieter fan operation and want a higher maximum so that when under load, it can reach the full RPM of their reference blower.

No, I'm running it because I wanted to test it. sKyn3t gained higher clocks with it although the BIOS's are the same apart from compatibility fixes I thought I'd give it a shot. If I wanted quieter fan operation I would change my fan curve alas I don't and will not.

- - - Updated - - -

Oh I know, that's why I mentioned NVIDIA ripping off Titan owners like me But mine are on air also with a stock blower so that's a disadvantage vs ACX cooler.

Not really, These cards (GTX 780 and Titan) are voltage limited, you could throw your card under water and at best will gain 1 speed bin i.e.13MHz. The only way is to remove that limit i.e. hardware mod.

130% doesn't make any sense for a PWM controlled fan..

Ok, the ACX fans run at lower RPM at any percentage, When I use the ACX BIOS on my REFERENCE card I lose 1000RPM at 100%. So an extra 30% will add 990 RPM and bring a REFERENCE cards fan up to what the RPM should be at 100%

Someone with ACX card should tell this exactly, we're saying just the opposite - with 100% fan set we're getting near 70-75% of the reference card rpm speed ~3250-3300 rather than 4250-4300 rpms:)

If you're not able to mod this ACX BIOS to run full speed fan on reference card, you can always apply the same mod to the standard 37 SC bios, located at the same location - EVGA Forum firmware update.

Its because the ACX fans at 50% run at a lower RPM than the fan on a reference card at the same %. If svl7 increased the limit (for people with reference cards) to 130-135% that should give us the full RPM of our fan.

Soo... ACX and normal vbios both allow for 100% fan speed? (Well my modified normal 780 vbios should, but the ACX... up to 100% is possible?)

Using the ACX BIOS on a Reference card does not allow the fan to reach 100%. This is because 100% on a ACX fan is much lower in terms of RPM than on a reference cards fan. If you increase the % to above 100% for people that use the ACX BIOS on a reference card that should fix it, if possible.

@svl7 could you upload another EVGA SC ACX BIOS with over 100% fan? I am using the BIOS on a reference GTX 780 and the fan speed is much lower.

1241/3506 with modded BIOS @ 1.212v. So lost 80MHz on the memory and gained 26MHz on the core. Temps increase of 2c.

Comparision with Unigine:

Modded Bios = 1241/3506

FPS = 59.2

Score = 1491

Min FPS = 27.4

Max FPS = 122.1

Stock Bios = 1215/3580

FPS = 58.2

Score = 1465

Min FPS = 27.7

Max FPS = 121.7

Gained 1FPS average on Unigine. Lost 0.3 on the min FPS and gained 0.4 on the max FPS in Unigine. Stable in Metro Last Light and Far Cry 3

Anybody here with a Gigabyte reference card, Could you post your max voltage? With +38(Max OV) in Precision X I only reach 1.187v.

It was actually the driver @ fault. I had switched power management mode from "adaptive" to "prefer maximum performance" for some benchmarking and forgot to switch it back.

I didn't even know there was such an option on nVidia desktop cards. I never had such an option on my AMD desktop GPU so assumed there wouldn't be for my nVidia card (My first nVidia card before someone asks how I couldn't have known).

All testing was done with reference cooling.

I guess your ambients must be much higher than mine.

Gonna give the BIOS a go, I'm stable at 1215/3580 @ +38 (1.187v). I doubt an extra 25mv will grant any higher but it's worth a shot.

Does Chrome keep anyone else's P-State @ P0?

Not here are you watching a flash video?

The Cards throttled in almost every demanding game (Metro Last Light, Crysis 3, Far Cry 3). Other bios mods got rid of throttling pre WHQL 320.18, too.

But only svl7s bios mods work with the changed power containment in WHQL 320.18. We tested 4 780's and 1 Titan on 2 different systems.

Use svl7s bios if you don't want your card to throttle. We were able to push our best 780 to 1254mhz/3800mhz up from 1202mhz/3200mhz.

Is this with air cooling or WC? Mine is air cooled and even without a custom fan profile mine was boosting to a consistent 1006 (not OC) in Metro Last Light and Far Cry 3. My Gigabyte reference card only allows a max of 1.187v with +38 whereas other reference card can already reach 1.2v.

Tested some 780s with your bios today. Works absolutely fine and it prevents any throttling in every game/application we tested.

Other bios mods throttled and displayed wrong power target values with the new 320.18 WHQL just like my Titan.

Great job!

Just out of curiosity what games where you throttling on prior to flashing the modded BIOS? Did you gain any additional OC?