narrowing down the selection

[Roark]

Crossfire Compatibility Chart.
It looks like your current card is only going to play nice with a 5750, 5770, 6750, or 6770. Although that is just "recommended", so you may be able to find a work around.

Honestly if you aren't going to upgrade your motherboard I would take the money you would have spent on it, add it to the money you would have spent on a 2nd card for crossfire, and just get a better single card.

Heck if the main cause for a new case was overheating, take the money you would have spent on a new case and add that in to the new GPU pool and find something that doesn't 90c instantly.

 

[pyromania]

lol sounds like your getting bored of this thread xD.

im still gonna get a better case for airflow.
just need to find a card that has crossfireX support and uses one pci slot

turns out i think my ram cards are actually 1.5gbx2

can different manufactured cards still work together?

 

[Roark]

lol sounds like your getting bored of this thread xD.

Nah, there are 3 threads discussing GPUs and crossfiring, 2 of them involving 5770s, I just wish at least one would get resolved.

From the AMD forums:

Q: What about the brand, clock speed and memory size ?
A: You can use diffrent brands, but always make sure to match the clock speed and memory size. It is true that if the clock speed do not match, the faster card will match the slower clocked speed card. For best performance, matching identical cards should be used.

From Tom's Hardware (insert 5770 for 5870):

you can Crossfire HD 5870 2GB with it's 1GB version but the 2GB version lowers it's memory to 1GB,so you'll get the performance of 2 5870's with 1GB RAM.

Curious as to what your current motherboard is, specifically why you want a card that only uses 1 slot.
A cursory look at the 5770s available on Newegg and it looks like there aren't any single slot cards. Granted something like this only uses one rear cutout slot, but the fan/heatsink on the side will overhang whatever slot is next to it internally anyway.

 

[pyromania]

orly? no radeon 5770 that take only one pci slot?

Newegg.com - XFX HD-577X-ZNLC Radeon HD 5770 1GB 128-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card
Newegg.com - PowerColor AX5770 1GBD5-IDH Radeon HD 5770 1GB 128-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card w/ Eyefinity
Newegg.com - VisionTek 900368 Radeon HD 6770 1GB 128-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card
Newegg.com - PowerColor AX6770 1GBD5-H Radeon HD 6770 1GB 128-bit GDDR5 PCI Express 2.1 x16 HDCP Ready Video Card
(many more)

well i don't care about the overhang fans, due to space of the 5770 i have now, i have just 1 pci slot space left
i posted earlier saying i think my gpu ram is actually 1gb and my ram cards is 1.5gbx2

oh wait the other two are 6770 xD

http://www.newegg.com/Product/Produ...7&cm_re=radeon_5770_hd-_-14-150-447-_-Product
this is the card i have now

plus
this is future planning for me not really a problem

 

[pyromania]

i found a very nice computer case it come with a video card stabilizer fan to keep them cool
Newegg.com - RAIDMAX SMILODON Extreme Black ATX-612WEB 1.0mm SECC Steel ATX Mid Tower Foldout MB Computer Case