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A crossfire question

Last response: in Graphics & Displays
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July 21, 2012 7:57:51 PM

hi there..

so i decided to get another card and use the crossfire tech to help improving my gamin experience

this is my pc spec:

Kingston KVR 8GB DDR3 1333 PC3 10666 2x4GB Memory
(planing on upgrading that to CORSAIR VENGEANCE 8GB 1600MHZ PC3-12800 240-PIN DDR3 MEMORY CML8GX3M2A1600C9)

CPU AMD Phenom II X6 1090T 3.2GHz TurboCore 3.6GHz Black AM3

MSI 890FXA-GD70, USB3, SATA III 6Gb/s, DDR3 Motherboard

WD Western Digital Black 1TB SATA 6Gb/s 64MB Cache 7200RPM

Thermaltake 700W Litepower 24-Pin Active PFC 100V-240V
(planing on upgrading that to AeroCool Power Supply Strike-X 1100W 80+ Gold)

Sapphire AMD Radeon HD 6950 2GB GDDR5 DX11


and im thinking of getting the SAPPHIRE 100312-3L Radeon HD 6950 2GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card


is it possible to make a crossfire connection on that pc?

im new to the crossfire'ing so id like ur answers to be as simple is possible

thanks guys ur the greatest :) 

More about : crossfire question

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a b U Graphics card
July 21, 2012 10:19:29 PM

Yes. As long as you have the bridges, you should be fine. In fact, you can crossfire with the HD6970 and the HD6990 since they use the same chip, just with different clock speeds and stream processors working.

Read it up here: http://www.tomshardware.co.uk/forum/245454-15-crossfire...
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a c 175 U Graphics card
July 22, 2012 3:21:16 AM

Yeah it should be possible, but really I'm thinking of a botttleneck. If you can OC your CPU is fine though...
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July 22, 2012 8:34:53 AM

refillable said:
Yeah it should be possible, but really I'm thinking of a botttleneck. If you can OC your CPU is fine though...


U mean i shouldnt do it ??

and i did OC my CPU to 3.8 GHz and its stable but still FPS isnt fulfillin' to me
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a c 175 U Graphics card
July 22, 2012 12:05:18 PM

well actually you can. No problem, you can go for an upgrade to haswell/Streamroller(?) next time.
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July 22, 2012 8:52:48 PM

ok one last question... is the 1100 watt PSU too much?? cus theres an 800 watt and its like 100$ cheaper
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a c 175 U Graphics card
July 22, 2012 9:43:17 PM

No need for the 1.1kW PSU. 800W should be sufficient But it should be a good brand. It's OK though to get the 1.1kW PSU as it will be more reliable when overclocking and it will give you more headroom to upgrade later on. Or you can take the middle road by buying these kind of PSU:

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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July 23, 2012 6:46:19 AM

Well.. its the same brand as the 1.1 kW.. And btw.. Whats wrong with my CPU ? Is really bad ? Cus ive looked up and all i found r like 0.6GHz faster and has 2 more cores

Thanks for the responses and really appreciate the help
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a c 175 U Graphics card
July 23, 2012 11:13:15 AM

what's the brand?

Your CPU is not that bad... It's decent :) 
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July 23, 2012 11:24:44 AM

AEROCOOL STRIKE-X 800W 80+ SILVER MODULAR POWER SUPPLY UNIT

so OCing it to 4.0 wud be enough ?
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a b U Graphics card
July 23, 2012 11:45:09 AM

Caesar,

I do not recommend modular PSU's, they are the cheapest kind. WHat you want is a high wattage PSU (reason being is that yo are using OLDER generation GPU's which draw much more power) with 1 or 2 12v rails. No more.

If below 700 watts, must be a single rail. Between 800-1k 2rails. That will give you what? between 40-54 amps per rail? More than sufficient.

My personal recommendation:

Crossfire gives diminishing results, first of all not all games support crossfire. Moreover, you dont get to utilise the 2nd card fully. In your case its a LOSE-LOSE situation, yo are using older cards that draw MORE power, and you dont get that much of a performance boost considering the heat and power cons.

I suggest you sell your HD6950 and pool your money to get a 7970, GTX 680 and those are the best single core GPUs on the market. If you sell your card you will have more than enough to get those.

PS: If you do want to splash out more get the monsters like 7990, gtx 690 etc.

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July 23, 2012 12:11:23 PM

alexander0884 said:
Caesar,

I do not recommend modular PSU's, they are the cheapest kind. WHat you want is a high wattage PSU (reason being is that yo are using OLDER generation GPU's which draw much more power) with 1 or 2 12v rails. No more.

If below 700 watts, must be a single rail. Between 800-1k 2rails. That will give you what? between 40-54 amps per rail? More than sufficient.

My personal recommendation:

Crossfire gives diminishing results, first of all not all games support crossfire. Moreover, you dont get to utilise the 2nd card fully. In your case its a LOSE-LOSE situation, yo are using older cards that draw MORE power, and you dont get that much of a performance boost considering the heat and power cons.

I suggest you sell your HD6950 and pool your money to get a 7970, GTX 680 and those are the best single core GPUs on the market. If you sell your card you will have more than enough to get those.

PS: If you do want to splash out more get the monsters like 7990, gtx 690 etc.


i hear whatcha sayin..

but i kinda have to upgrade my PSU and my RAMs anyway.. and doing the crossfire is the cheapest for me now..

PSU and RAMs r for like 200$ and i found an unlockable HD6950 for 200$ but if i tried to get the 7970 which is for 440$ and my old card wud sell for not more than 170-180$ so im left with 260$ to pay which the kind money i dont have

all i have now is like 400$ to upgrade my rig and thats all i can squeeze
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a c 175 U Graphics card
July 23, 2012 1:31:22 PM

How about 7870?
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July 23, 2012 8:23:18 PM

"The 7870 is only about 10-15% faster than a single 6950"

thats what i got searchin about it.. so i dont think this is considered as an upgrade
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July 24, 2012 10:09:54 AM

well.. it seems like a good option but unfortunately its not available here in my country.. ppl here have been searching for that card but no luck.. what about the 7850, is it anywhere near being an upgrade? even if i considered going crossfire in the future ?
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July 29, 2012 12:26:26 AM

Best answer selected by the_caesar.
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July 29, 2012 11:07:10 PM

hi there..

just wanted to update my thread and tell u that ive done it yay :D 

here are the results from unigine benchmarking

before




after




it is awesome..


thanks for everyone who helped me :) 
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