680m GDDR5 overclocking (Dell Hynix vs Clevo Samsung)

I was wondering what card's memory seems better for overclocking.

The Dell has 2gb hynix, while clevo uses 4gb samsung. Please post your overclocks.

Thanks.

 

Dell's 680 sucks atm and is no better than a 7970 unfortunately..............if you want the 680 clevo and the upcomming MSI GT60-70 are your only options.

 

The Clevo vRAM does about 2400-2500Mhz

 

Yep, 2400-2500 seems about right. Meaker seems to do a little better, I can't eek much more than 2450, but still 600-700MHz over 1800MHz overclock is pretty substantial. I've just been running stock speeds lately though because it plays everything flawlessly at high detail and high fps.

 

What's wrong with the Dell 680? Throttling? Lower quality ram?

 

mmm i didnt even know there is a difference

 

I also reverted back to stock voltage, though overclocked (854/2600) - for some reason, the stock voltage allows me to crank my memory clocks more than the overvolted vBIOS which are pretty unstable I have to admit.

 

With the latest driver sets 2600mhz is stable.

 

Is that 302.77?

 

I think 304.79

edit: Mea could you run a Vantage with your highest clocks?

 

304.79 modded.

 

Are you going for the P170EM BIOS ? And please check my last post for my Vantage run query

 

NVIDIA GeForce GTX 680M video card benchmark result - Intel Core i7-3610QM Processor,CLEVO P15xEMx score: P25420 3DMarks

Roughly, I don't think it was utter max.

It was before I learned my max mem was a touch higher.

 

I'm staying away from beta drivers. They've done nothing but cause me headache with the last couple I tried.

 

the only reason to go with 304.79 for me was the secret world... it is less stable with every other game i have tried. especially the witcher 2

 

I accidentally won an auction for a 680m 2gb on ebay. I didn't know my offer would go through without confirming with me again. Anyways its green pcb, hynix ram, and 2gb, so it must be the dell one.

I don't know if I want to go ahead with the purchase with all the throttling issues I'm reading about. I am planning to put the card in a MSI gt780 barebones, which doesn't have optimus. Its likely the throttling issues are with that gpu card and not alienware motherboard.

 

I don`t think there is anything wrong with the Hynix memory. Could be the turbo boost that doesn`t play nice.
People have tried other vbios made for the 2GB versions, but got throttling when increasing voltage. Not the memory, but the GPU itself.

I think they need to figure out how this turbo boost affect overclocking and how to overcome it. Or maybe build a new vbios from scratch. There is gotta be something with their systems that is not working like it should. Maybe BIOS code that have a built in throttling safe guard when you go over certain limits (god knows what limits), kinda like the famous 580M temperature throttling.

 

No the Hynix memory is also gimped on the Dell cards. The core throttles but at the same voltage, the Dell card achieve no where near the same memory clocks as the Clevo ones at the same voltage. On the Dell cards, OCing the memory does not cause throttling, but the clocks don't go as high. Seems like the PCB isn't delivering the same voltage to the ram chips as the Clevo cards.

Basically, with the Clevo cards, OV + OC = pwnage. On the Dell cards, OC + core = throttle, OC + memory = crash, OC + both = crash @any voltage.

 

Meaker is overvolting his card though with that custom VBIOS, right? On stock clocks I can't even get my card to run 1000MHz (so 2000MHz the way you guys are counting) and be stable. It freezes up in games for any period of time. At stock voltage, the best 3DMark11 scores I was getting were around 7k with 854MHz on the core and 1000MHz on the memory. It can sustain that clock for some time, but freezes up eventually.

 

Seems like Dell has problems with the highest end nVidia card

AGAIN >:/


A little off topic though, how does the MSi GTX 680M compare to Clevo GTX 680M?

 

I have to stay a few MHz below 2600 to not mess up (Clevo, on 304.79 modded driver from laptopvideo2go).

 

Could you please link me to that? I've been looking for the more up to date drivers for the 680M and neither the WHQL or Beta drivers from Nvidia work for me.

 

Mobius 1 ... Fox 2

 

I commend you for being a fan of Ace Combat, but the thread bump... /:

 

happy holidays..;



With the new drivers, here's a HWInfo 64 screenshot of the Dell 680m OC'ed to 888 / 2407 on stock Vbios with 310.64 beta driver.

This is about an hr. of playing Norshal Canals TDM with 52-64 players at ultra 1080p, v-sync on with motion blur set to half.

It does average 47-63 FPS even with v-sync on.

 

I'm on Dell's 680M right now, with a modded vbios, I managed to get 2600MHz stable graphics clock. Loads games like a . (Good , of course)

 

I'm on Dell's 680M right now, with a modded vbios, I managed to get 2600MHz stable graphics clock. I was playing guild wars 2 with it stable, everything maxed out with AA to the max at 60 FPS, it loaded dungeons in about 3 seconds, compared to 4 usually. Anyways, it ROCKS.