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***The Official MSI 5850 Twin FrozeR Thread***

nice oc^

I can't get my core clock over 930 stable even if i have the memory at the stock 1000 even at the highest voltage (1.3)

But I can run the memory at 1300 with 930 core no problems.

I decided to run it at 900 core 1250 memory @1.2volts....

Gives the core a bit of breathing space, I don't really like the idea of 1.3volts (would probably half the life of the card) and 1250 memory makes no less fps than 1300 in any of the games I have!
 
keeping this clock now

voltage: 1.09V
core clock: 850mhz
memory clock: 1100mhz
driver: 10.12
max temp: 61

happy with this works great cant wait till i get my new mother broad so i can use my 2nd Msi 5850

thanks again danceforfreedom :)
 
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Wow, these cards are really poor overclocks. Haven't seen this thread before, here's my 2p on the card:
Mr Krugga said:
Installed the card last night at 2am :rolleyes:

One thing I can tell, the cooler is brilliant. Don't know how it performs overclocked because I haven't tried that yet but in my Coolermaster CM 690 II with only two 120mm quiet fans it's not louder than the case fans :eek:

That really is a good thing, one of the reasons I was considering watercooling. The card is inaudible up to 36% or so where the fans spin at ~2000 RPMs.

It isn't annoyingly loud at 55% either, you can leave that setting for higher overclocks and gaming with headphones.

One thing (probably the only one so far) I'm unhappy about is that the card comes with a very decent cooling by MSI and yet it cannot be overclocked below 775/1125MHz using Overdrive or standard MSI Afterburner methods. You need to unlock the unofficial overclocking just like with the reference cards (even though it's 100% non-reference design). The reference MSI card came out with unlocked clocks :mad:


EDIT: forgot to note the temps, with fan set to 36% the card won't go above 55*C. I think setting it to linear would give me even lower temps. My Sapphire 5850 can go up to 75*C in games and is certainly not as quiet. Idle temps are 10*C and fans are spinning at very low speed.
Click to expand...

Seeing that my reference Sapphire 5850 did 920/1200 at 1.15V and 835/1200 at 1.087V, this struggles to get 830/1200 at the default 1.1V, son, I'm disappoint.jpg :(
 
Mr Krugga said:
Wow, these cards are really poor overclocks. Haven't seen this thread before, here's my 2p on the card:


Seeing that my reference Sapphire 5850 did 920/1200 at 1.15V and 835/1200 at 1.087V, this struggles to get 830/1200 at the default 1.1V, son, I'm disappoint.jpg :(
Click to expand...

they will go a lot higher but i dont wanna change my voltage and i like it quite :) i gotta sleep in the same room
 
I managed to the drop the voltage from 1.300mv down to 1.260mv while keeping the core 975MHz/memory 1100MHz without crashing in Heaven Benchmark 2.1, max temp is now only 58C at 45% fanspeed (can't hear it).

Will try BFBC2 again when I have time.
 
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Especially if the noise level is less :-)

I would consider remounting the heatsink if it werent for them being brand new and under warranty.
 
Mr Krugga said:
Wow, these cards are really poor overclocks. Haven't seen this thread before, here's my 2p on the card:


Seeing that my reference Sapphire 5850 did 920/1200 at 1.15V and 835/1200 at 1.087V, this struggles to get 830/1200 at the default 1.1V, son, I'm disappoint.jpg :(
Click to expand...
I think you might have just been lucky to land a core that doesn't require much extra voltage to keep the overclock stable. Putting voltage used aside, at least it 'can' hit overclock at above 900MHz...now think of the poor souls who bought the non-reference 5850 (not MSI/Asus) and couldn't clock it beyond 800MHz stable because of no voltage tweak. Let's 'assume' these cards require more voltage for overclock...you have to bare in mind it comes with a very good custom cooler which keep the temp way down; I don't think a reference 5850 overclocked to 975MHz with its reference cooler would be able to keep the temp below 60C while running Heaven Benchmark.
 
I don't think any custom card is comparable to the reference ones. Who knows what MSI has changed on the pcb which could push up the required voltage.
 
danceforfreedom said:
You cant say there bad overclockers. The stock core is 725 and most peoples will get over 900 most over 925. A 200 core overclock on a 725 stock is bloody decent!
Click to expand...

I'm sorry to break it down to you but they are. If reference cards are able to keep higher clocks at 20c higher temps then these definitely aren't mighty overclockers.

My Sapphire 5850 is just an average 5850, there are many that went above 1GHz on core while keeping within reasonable voltage limits. Even though they might get a little toasty, they definitely are more capable overclockers. Bear in mind that any 0.1V increase is over 9% increase above default voltage these cards are designed for.

I'm not too fused about high overclocks though, as long as I can achieve 940MHz whilst maintaining low temps (below 75c), I'm happy with the card. The Sapphire will have to go purely for its stock cooler. It is a much better card for anyone wishing to push their cards over the limits though.

I wouldn't personally try flashing these cards with any reference BIOS, they have redesigned PCBs and different stock voltages (mine is 1.1V).
 
I gave in and bought 2 in the end, picked them up on Xmass eve, not really had chance to play with them much yet.

what i can say is that i will need a new psu, i did try both cards in together but the system went completely unstable (OCZ 600W silent X, is not enough), individually both cards run fine..

The build quality compared to my old Powercolor PCS+ 5850 is excellent, no plastic shrouds on these, they really do look the business.

hopefully will get chance to have a proper play soon :)
 
Mr Krugga said:
My Sapphire 5850 is just an average 5850, there are many that went above 1GHz on core while keeping within reasonable voltage limits.
Click to expand...

I don't think you can be sure of that. With my reference Sapphire, I could barely get into the 800s without upping voltage (which I wasn't prepared to do), and I think it's reasonable assumption that many people like me saw they couldn't overclock that far and so didn't bother, and didn't post about it. So the average overclock will be lower than it seems.
 
Thank you OC santa!

Just got my card up and running, delayed due to pulling the lid on new comp and finding only SATA power. Had to wait for ******s to open today to get the converters. Doh!
Got to say, it's flippin impressive!

Only trouble is, I just watched the first 1080 hd vid I could find on you tube and have realised,..
Kylie has a hairy chin!! Aaargh...! :D
 
I dont think these cards are great overclockers like some reference ones, although they are quiet and run cool so I dont see any problem really considering mine does:

(950/1250 @ 1.254) 69c max in Heaven bench. 10.12

Im betting that 900 core would probably take a lot less voltage, but this is just my quick and dirty Oc.

One thing that i'd like to know though, can anyone let me know if the VDDC temps can be monitored with these cards, i've tried the usual programs to no avail.
 
Flakey said:
I dont think these cards are great overclockers like some reference ones, although they are quiet and run cool so I dont see any problem really considering mine does:

(950/1250 @ 1.254) 69c max in Heaven bench. 10.12
Click to expand...
What I found it that for my overclock it is easy enough to get it stable for Heaven Benchmark 2.1 (I can run Heaven stable with 1000core, 1300 memory at voltage 1.300mv), but when I test it in BFBC2 the overclock is not stable enough and the game/driver would crash...may be BFBC2 stress some parts of the graphic card which the Heaven Benchmark does not.

The only stable overclock in both Heaven Benchmark 2.1 and BFBC2 I managed so far is voltage 1.260mv, core clock 975MHz, memory clock 1100MHz.

I'm now trying for a different overclock profile which using a lower voltage try to get a stable overclock that won't crash in BFBC2...may be something like 900MHz core clock.

P.S. Your 5850 is about 10C higher in temp than mine (my overclocked 5850 temp max at 58C in Heaven Benchmark 2.1 at 45%~50% fan speed)...do you not have a decent case with good airflow?
 
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Final overclock update:
After numberous crashes in BFBC2 (the game itself with HBAO enabled stress the GPU 100% nearly of throughout the entire duration of the 1st mission) and lots of tweaking, I finally managed to settle on the following two overclock profiles which doesn't crash in BFBC2 or Heaven Benchmark 2.1...

Profile 1:
Voltage: 1.260mv
Core clock: 975MHz
Memory clock: 1100MHz
Max temp in Heaven Benchmark 2.1: 58C (fanspeed 48%)

Profile 2:
Voltage: 1.240mv (driver would crash at lower than this voltage when running BFBC2 at 900MHz core clock)
Core clock: 900MHz
Memory clock: 1200MHz (driver would crash at higher than this memory clock when running BFBC2)
Max temp in Heaven Benchmark 2.1: 56C (fanspeed 47%)

Just a reminder everyone's card is different, so what works for me might not neccessarily works for others. But I think this info would be good as reference.
 
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Marine- those clocks/temps are very nice.

I get 80C with 850core/1100mem/1.270voltage with Furmark running for 15mins. That's with fan speed at 90.

Time to upgrade this ancient case me thinks :o
 
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