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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 670 DirectCU II OC Edition Radeon HD 6990 Crossfire
Cyberpunk 2077 117% 73%
Halo: Reach 50% 60%
Red Dead Redemption 2 58% 26%
Call of Duty: Modern Warfare 58% 26%
Doom Eternal 36% 8%
Dragon Ball Z Kakarot 2% 22%
Microsoft Flight Simulator 117% 73%
FIFA 20 16% 33%
Need For Speed Heat 58% 26%
Grand Theft Auto VI 142% 92%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 6990 Crossfire are noticeably better than the Nvidia GeForce GTX 670 DirectCU II OC Edition.

The GTX 670 has a 150 MHz higher core clock speed than the HD 6990, but the HD 6990 has 272 more Texture Mapping Units than the GTX 670. As a result, the HD 6990 exhibits a 208.9 GTexel/s better Texture Fill Rate than the GTX 670. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 670 has a 150 MHz higher core clock speed than the HD 6990, but the HD 6990 has 96 more Render Output Units than the GTX 670. As a result, the HD 6990 exhibits a 74.8 GPixel/s better Pixel Fill Rate than the GTX 670. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GTX 670 was released over a year more recently than the HD 6990, and so the GTX 670 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD 6990.

Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.

The HD 6990 has 6144 MB more video memory than the GTX 670, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the HD 6990 also has superior memory performance overall.

The HD 6990 has 447.7 GB/sec greater memory bandwidth than the GTX 670, which means that the memory performance of the HD 6990 is massively better than the GTX 670.

The GeForce GTX 670 DirectCU II OC Edition has 1344 Shader Processing Units and the Radeon HD 6990 Crossfire has 6144. However, the actual shader performance of the GTX 670 is 1422 and the actual shader performance of the HD 6990 is 5100. The HD 6990 having 3678 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 6990 delivers a massively smoother and more efficient experience when processing graphical data than the GTX 670.

The GTX 670 transistor size technology is 12 nm (nanometers) smaller than the HD 6990. This means that the GTX 670 is expected to run slightly cooler and achieve higher clock frequencies than the HD 6990.

The Radeon HD 6990 Crossfire requires 750 Watts to run but there is no entry for the GTX 670. We would recommend a PSU with at least 1000 Watts for the HD 6990, but we do not have a recommended PSU wattage for the GTX 670.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed980 MHzvs830 MHz
Boost Clock1058 MHzvs-
ArchitectureKepler GK104-325-A2Terascale 2 Antilles (x2)
OC Potential - vs Poor
Driver Support Good vs -
Release Date01 May 2012vs01 Mar 2011
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
green tick vs green tick
vs green tick
vs green tick
green tick vs -

GPU Memory

Memory2048 MBvs8192 MB
Memory Speed1502 MHzvs1250 MHz
Memory Bus256 Bitvs1024 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth192.3GB/secvs640GB/sec
L2 Cache 512 KB vs green tick 2048 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units1344vs6144
Actual Shader Performance68%vs100%
Texture Mapping Units112vs384
Texture Rate109.8 GTexel/svs318.7 GTexel/s
Render Output Units32vs128
Pixel Rate31.4 GPixel/svs106.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs0
DVI Connections2vs4
HDMI Connections1vs2
DisplayPort Connections-vs-

GPU Power Requirements

Max Power-750 Watts
Recommended PSU-1000 Watts

GPU Features

Shader Model5.0vs5.0
Open GL4.5vs4.1
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3570K 3.4GHzvsIntel Core i7-2600K 4-Core 3.40GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GTX 670 DirectCU II OC Edition is a Special Edition of the powerful GeForce GTX 670. See the standard version for more information about it.
The new features include an increase in the core-clock that went from 915MHz to 980MHz while the Turbo Boost is now of 1058MHz. A 20% more effective cooler is also included.
The performance boost is significant and around 5% when compared to the standard GTX 670.
Most demanding games will run at the highest settings.
Radeon HD 6990 Crossfire is a solution of two Radeon HD 6990 put together using AMD'S Crossfire technology.
Check the page of Radeon HD 6990 to know more about its chip.
Crossfire relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, is only up to 10% better than a single Radeon HD 6990 performing by itself but it might be worse (depending on whether or not the 3D game supports crossfire or in the graphics driver) than a single Radeon HD 6990. Expect this combination to draw up to 750 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
Recommended CPU
Possible GPU Upgrades
GPU Variants