Well, I use mtgox because of the eurotransfer (SEPA) with low fees, big volume and... that's it
Btw I had hard time searching for a market suitable for EU, could you recommend some ?

Hello,

I just got my new 6950 1gb, installed it, latest drivers - everything okay.
But when I added the old 5770 in the setup I can't put them in crossfire.
In device manager im able to see both of them but not in the guiminer in example.
Also I don't see any option like "enable crossfire" in CCC ?
Is there something Im missing ?

Anyone have an idea which SDK will give better performance for these cards ?
My guess is if m4rkiz is right and they don't OC so well then SDK 2.1 will be better because it gives better MH/s at lower clock speeds.
Anyway how much MH you guys get with these cards ?

Okay, so unlock is not guaranteed in both cards but currently I can buy the ASUS 1GB DCII cheaper than the 1GB Sapphire.
So I guess Asus is better, no ?

I just got a good deal on ASUS EAH6950 DCII/2DI4S/1GD5 (http://mostbg.com/most/NormalImage.aspx?itemid=44146)
This one have 2 fans and currently seems to be my favourite Any feedback on this model ?

How about if I flash a BIOS with unlockable shaders on them ?

Hello All,

I was wondering which of those two cards is better for mining ?
SAPPHIRE HD6950 PCI-E 2GB GDDR5 (http://www.stantek.com/products/500x500/p43407.jpg)
SAPPHIRE HD6950 PCI-E 1GB GDDR5 (http://www.stantek.com/products/500x500/p45007.jpg)

The 1 GB version is cheaper of course, but i was wondering if it's possible to unlock shaders ?
Also on the 2gb model the fan seems too small to me. It will be very loud on high RPMs, no ?
Please give me some feedback on those 2 cards.
Thank you !

IMO if memory is underclocked at 300 MHz -w256 gives better results

I did it by editing "UnofficialOverclockingEULA   = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it" but the strange thing was that I had to restart the pc and the first time I ran Afterburner min mem clock was 390MHz After a second restart it is now 195

Okay but how ? I tryed editing afterburner's config file and it wont work .

Or maybe 600Mhz memory clock is the minimum for 5770 ?

Already done that(UnofficialOverclockingMode   = 1) and still cant go lower than 600.

Hey,

I'm trying to underclock the memory frequency on my 5770 but MSI Afterburner won't let me go below 600. Anyone knows how to ?
Also how low should I go ? 300 ?

Btw what is exactly the point of underclocking memory ? Generating less heat or what ?

Tryed your settings and seems like im getting 3-4 Mhash/s more. Thank you )

Also check your power options. Set them to best performance and set Turn off display and Put computer to sleep to never.
Btw I'm able to get ~200 MHash/s with my 5770 and about 170 without overclock using Guiminer. Just use extra flags:  -v -w256

Hmm 6850 is 240$ here and btw im currently looking at 149$ Sapphire 5850 but unfortunatelly they ship only to US

@wigsgiw 5830 is 8$ cheaper than 5850 - 280$

@JayC I just managed to get 190MHash/s but a core temp of 85C is way too high

Thank you for the answers

@JayC OCed core at 950 MHz gives me 170+ but the temperature is too high - 82C and I want to keep it <80. Maybe if i improve the airflow inside the box i will be able to keep the core at 950MHz 24/7 but still the difference is not that big...


I'm not from US either. I'm from Bulgaria, Eastern Europe and here local dealers sell 5850 for $288 That's why im currently looking to buy used card and a power supply. And... yeah maybe I will stick with my 5770 + hopefully 5850 as this will be the cheapest mining upgrade.

And also another question. Which is better 5830 or 5850 ? Or is 5870 worth the money ? Ohh god im very confused