How far can 670's be pushed ??

Mr. May

Mr. May

Mr. May

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I have 3 670's. The evga ftw edition but they will not overclock much at all as the auto boost gets just under 1200mhz across all three.

Best Ive managed is 112% with +50 on the core and +70 on the memory and even then there not 100% stable.

What is the limit of these cards? As im considering watercooling them all if I could reach 1300+ as I already have PA120.4 on the back of my case and a DCC 18w pump ready for it. But at just shy of £300 for block's would you say its worth it ?

Cheers in advance Mr. May
 
I have honestly never clocked these cards mate. So I cant say.

I have four 680 to clock sometime soon from a major vendor but never done any 670.

I got a 680 to 1960mhz clock and 1900+ mem on Cascade. But never had a go with 670's.
 
Okay I was looking for a good 24/7 speed so water is as extreme as I can go what's your experiance been with 680's on water ?
 
Your likely to run out of volts before anything else with the 670, even a vBIOS edit will only net you 1.21v.

Water is worth it if the cards are loud or hitting the thermal step down mark of 70c, you may gain a little extra with water, but not as much as you would see on a card with real voltage control.
 
I was looking into this volt mod if i watercooled them, as at my middle card does go over 70 and can be heard mainly due to no breathing space.
 
I've currently got my 670 clocked to 1280mhz core, 3600mhz memory. It did go higher in benchmarks, but occasionally crashed in Far Cry 3 so I backed it off to this point.

I had to unlock the core to 1.21v and 150% to achieve this though. On stock bios I got the same memory speeds and 1228mhz... so not a huge difference.
 
Mr. May said:
Okay I was looking for a good 24/7 speed so water is as extreme as I can go what's your experiance been with 680's on water ?
Click to expand...

Never had em on water yet. When I get the 4 cards I need for quad SLI they will be on chilled water.As it stands I have one card and its on -100.
 
The original BIOS locks it to a max of 1.175 volts, then with a custom BIOS you can reach 1.212 volts. Most cards are hardware limited to this point, so unless certain cards are different... you'd have to mod the hardware to push it beyond this point. I don't know if the old pencil trick works here :p.
 
You should be able to push the memory much further im at +700 from what I have seen +500 is almost guaranteed as for core you just have to get lucky because your limited to 1.175v or 1.21v (from what I have seen 1.21v does not help much but most of the bios's turn off kepler boost meaning you don't get throttled at 70 degrees).
 
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Got a wf 670 that will do 1320 core, 7560 memory. Stock bios and cooling. Seen a few on here that do 1350mhz core, but theese are running the 1.21v bios mod.
 
setter said:
Got a wf 670 that will do 1320 core, 7560 memory. Stock bios and cooling. Seen a few on here that do 1350mhz core, but theese are running the 1.21v bios mod.
Click to expand...

I wonder what I could do with 1.21, I thought about flashing when I first got this card but I didn't fancy the idea of losing the ability for the card to clock down while playing a less demanding game.

Edit: Decided to flash the 1.21v bios and managed 1372 core :D. I will probably leave it somewhere around 1360 for 24/7.
 
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setter said:
Got a wf 670 that will do 1320 core, 7560 memory. Stock bios and cooling. Seen a few on here that do 1350mhz core, but theese are running the 1.21v bios mod.
Click to expand...

Nice, very similar to what mine is running at. My fastest stable clock so far is 1346, but that's with the fans running higher and the voltage turned up to 1.21v. 1320 is what I run it at day-day.

I'd love to see what could be done if they were unlocked. It is possible... but not something for the faint of heart. Here's a thread I found on modding the 680 which might be similar: link
 
chrisoverson said:
Nice, very similar to what mine is running at. My fastest stable clock so far is 1346, but that's with the fans running higher and the voltage turned up to 1.21v. 1320 is what I run it at day-day.

I'd love to see what could be done if they were unlocked. It is possible... but not something for the faint of heart. Here's a thread I found on modding the 680 which might be similar: link
Click to expand...

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