Revisiting quad-gpus and the Law of Diminishing Returns
Subject: Graphics Cards | May 24, 2011 - 12:44 PM | Jeremy Hellstrom
Tagged: quad sli, quad crossfire, sli, crossfire, nvidia, amd
With SLI and CrossFire we all hoped to see direct scaling so that a quad GPU setup would be somewhere in the neighbourhood of 4x better than a single GPU. That has proven to be incorrect, not only is the scaling nowhere near that it has been discovered that in some cases going beyond 2 GPUs can actually reduce performance.
As the hardware and drivers evolve, it is worth revisiting the scaling performance of both AMD and NVIDIA which is why [H]ard|OCP grabbed two GeForce GTX 590s and two AMD Radeon HD 6990s, both dual GPU cards. In three of the five games tested they ran into at least one issue, a strike right off the bat. Read on to see how they rate the value of the two manufacturers based on the performance they saw once they'd resolved the problems.
"How does NVIDIA's GeForce GTX 590 SLI Quad-GPU compare to AMD's Radeon HD 6990 CrossFireX Quad-GPU? We will find out if these "if-money-didn't-matter dream video card setups" will deliver the gameplay experience we all expect."
Here are some more Graphics Card articles from around the web:
- Asus ENGTX460 GTX 460 Voltage Tweak Review @ Tweaknews
- MSI GeForce GTX 580 Lightning @ OCAU
- Gigabyte GTX 560 (GV-N56GOC-1GI) @ Pro-Clockers
- ASUS GeForce GTX 560 1GB DirectCU II TOP @ TweakTown
- MSI N560GTX Ti Hawk Video Card @ Benchmark Reviews
- Zotac Geforce GTX 550 TI @ Rbmods
- MSI GeForce GTX 560 Twin Frozr II Review @ Techgage
- NVIDIA Chips Comparison Table @ Hardware Secrets
- Desktop Graphics Card Comparison Guide @ Tech ARP
- AMD FirePro V7900 @ Phoronix
- AMD FirePro V5900 @ Phoronix
- ASUS Radeon HD 6870 Video Card Review @ Legit Reviews
- MSI R6950 Twin Frozr III Power Edition OC @ Benchmark Reviews
- Sapphire Radeon HD 6670 1GB Graphics Card Review @ eTeknix
- Sapphire Radeon HD 6770 1GB Vapor-X @ TweakTown
- VTX3D Radeon HD 6790 1GB @ OCAU
- HIS Radeon HD 6790 IceQ X Turbo 1 GB @ techPowerUp
- PowerColor PCS+ AX6950 Vortex II @ Benchmark Reviews
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