Gigabyte R675OC-1GI 1GB DDR5 vs Sapphire HD6750 1GB DDR5

[lobolismart]

hello,

do you have any opinions on this comparison:

http://www.gigabyte.us/products/product-page.aspx?pid=3858
(has stock OC; cheaper price over here; not much reviews on this one)
gpu: 740mhz
ram: 1gb ddr5 @ 1200mhz, 128bit
shaders: 720

vs

http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1073&lid=1&pid=1190&leg=0
(pricier)
gpu: 700mhz
ram: 1gb ddr5 @ 1000mhz, 128bit
shaders: 720

leaning more towards the GB one...or perhaps i should move to HD6770, like this one, which is stock 775mhz gpu, 1000mhz, ddr5 800 shaders and attempt to OC to a "proper "6770 - 850mhz/1200mhz/800x:
http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1073&pid=1247&psn=&lid=1&leg=0
(slightly pricier than the 2 above = more bang for the buck ?)

my primary concern though is fan noise levels of the cards above. does anyone has any info on the Sapphire HD6770 and the GV-R675OC-1GI ? the sapphire hd6750 ddr3/ddr5 have the same cooling, so i can say its pretty quiet at 40-45%

thanks
ll.

--------
p.s. / sidenote / reasoning:

i've recently purchased a new system with Sapphire HD6750 1GB DDR3, but the card is performing pretty bad under all benchmark tests and not very well in games. scores are 1/2 to 2/3 of people with the similar systems.

mine is:
cpu: i3-2120
mb: ga-p61a-d3
ram: a-data 2x4gb ddr3 1333mhz
psu: gx-550
- latest drivers and bios(es)
- default (to slightly lowered) catalyst settings
- no overclocking
- fresh win7 ultimate x64, no bloat like AV
- clocks are not locked at idle values
- runs pretty well in dirt 3 and crysis 2 around 40fps in reasonable settings still...

for example passmark (PT 7.0) gives the card around 900pts, while it should normally be 1600pts (same gpu clock). i doubt that the ddr5 for a video card will contribute that much. the strange part about this test is that it fails the "dx10", "low", "medium" tests", but performs equally well at the "complex" test. all 3dmark scores i've tried (vantage, 06, 11) report the video performance as very low. if anyone has any ideas what may be causing this let me know. could it be the MB bottlenecking in some way?

 

[Guest]

Hello, I have Gigabyte HD 6750 OC and it is very efficient graphic card. My card has Hynix DDR5 memory, but there are installed Samsung memory modules in other cards. Cooling system is very quiet and efficient. Idle temperature is about 40 - 45 Celsius degrees, stock temperature is about 55-68 Celsius degrees. This card is a good platform for budget PC. My card cooperates with budget AM3 Asus motherboard and AMD Athlon X2 255 processor. Most games run at very high and ultra quality. That's great. The card, as others said on this forum is overclocked and the results in games are better then competition products. I think this is good alternative for GTS 450 and it's very close to quicker brother HD 6770!