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6970 Triple CF, or 6990 + 6970 CF?

post #1 of 17
Thread Starter 
To get a Sapphire 6990 and 6970 equals the exact same amount as 3 6970 - which would be the better option?

Also, with heat in consideration, what's the best option?

Going to be using a CM HAF X and an Asus P67 mobo, stock cooling on the graphics cards.
post #2 of 17
Quote:
Originally Posted by refeek View Post
To get a Sapphire 6990 and 6970 equals the exact same amount as 3 6970 - which would be the better option?

Also, with heat in consideration, what's the best option?

Going to be using a CM HAF X and an Asus P67 mobo, stock cooling on the graphics cards.
If you using an Asus P67 mobo, then I suggest the WS revolution. Also, running the 6990 and 6970 works fine, but the 6970 usually has lower OC adjustment limits, so you would need to flash the bios to provide higher settings. If you can run three 6970s, then go for it IMO. I prefer to keep everything the same, but keep in mind, you want to have all three cards running in 8x slots minimum, so if you only have two PCIe slots, the 6990 + 6970 is your ticket. Also, you may want to reverse the front 200mm fan on the HAF-X case to pull hot air out the end of the 6990. The WS revolution should have sufficient spacing between the cards, but its still gonna run on the hot side IMO.
Edited by ezveedub - 5/22/11 at 10:34pm
     
CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
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Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
CaseMouseAudio
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CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
OSMonitorKeyboardPower
Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
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Cooler Master HAF 932 Microsoft Wireless Optical Creative 5.1 
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post #3 of 17
Thread Starter 
I was actually planning on getting the Sabertooth - I've seen the WS Res thrown out as a suggestion a lot though, any specific reasoning besides x16/x16 (which, I'm still not sure is actually true).

Also /facepalm, I didn't even notice the Sabertooth only had 2 PCI-e slots.
post #4 of 17
It doesn't matter which way you go, same outcome. I ran my 6950s in tri at 1080 in the metro bench just to see, and it got the same fps as the 6990+6970 setup. So... ugh you could get the same metrics with triple 6950s.

I'd get teh WS Revo, the flexibility the nf200 chip gives you will pay out in spades. Btw, isn't the sabertooth x16 or x8/x8 only which means ya can't run a 6990 off it with anohter card? The ws is full x16/x16.
Edited by tsm106 - 5/22/11 at 10:42pm
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post #5 of 17
The WS does have the NF200 chipset, so you maintain x16 speeds on both slots.
     
CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
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Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
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CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
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Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
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post #6 of 17
Thread Starter 
Ah I see - still brand new to both building PC's and OC'ing. Well I'll have to convince my wife not to shoot me over the slight extra cost, but that sounds good. Thanks!
post #7 of 17
Quote:
Originally Posted by ezveedub View Post
The WS does have the NF200 chipset, so you maintain x16 speeds on both slots.
Just to add, it will be x16 in the blue slots with two cards. One a third card is installed or fourth in the grey slots, it splits the 16x into 8x/8x each, one for each blue/grey slot.
     
CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
OSMonitorKeyboardPower
Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
CaseMouseAudio
Cooler Master HAF 932 Microsoft Wireless Optical Creative 5.1 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
OSMonitorKeyboardPower
Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
CaseMouseAudio
Cooler Master HAF 932 Microsoft Wireless Optical Creative 5.1 
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post #8 of 17
I don't know about the 6990's heat production but with two heavily oc'd overvolted and unlocked HD 6950 in Crossfire they never really hit the 70's if I set fan to 45% which is tolerable... Tri-Fire might force you to ramp up the fan and with 3 cards running 50+% its a little noisy...
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post #9 of 17
Thread Starter 
How big of a performance hit is it being x8 vs. x16?

Mostly I'm stingy about shipping, and considering I've built my whole order for the computer I'm building on Amazon I'd like to buy everything there. Sticking with the sabertooth/p8p67/p8z67 with a single 6990 or dual 6970 may be ideal for me to not go overbudget, so just wondering what kind of performance hits I'd be taking.

Honestly, I don't play that many really intensive games currently, I've been waiting for some of the big ones in Q4 of this year.


Edit: Also, since the 6990 is a dual-core gpu, would that not mean I'd end up in x8/x8 on any board? I still don't quite understand the PCI setups.
Edited by refeek - 5/22/11 at 10:57pm
post #10 of 17
Quote:
Originally Posted by refeek View Post
How big of a performance hit is it being x8 vs. x16?

Mostly I'm stingy about shipping, and considering I've built my whole order for the computer I'm building on Amazon I'd like to buy everything there. Sticking with the sabertooth/p8p67/p8z67 with a single 6990 or dual 6970 may be ideal for me to not go overbudget, so just wondering what kind of performance hits I'd be taking.

Honestly, I don't play that many really intensive games currently, I've been waiting for some of the big ones in Q4 of this year.
I would still pony up for the ws revo, so that in the future you can add as many cards as you want. Check out the metro bench thread to get an idea of relative performance. You can also get an idea of scaling with more than one card on a variety of platforms.

And yes, a dual gpu card in x16 = x8/x8.
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