GeForce GTX 650 vs Radeon HD 6950

Intro

Compare all that to the Radeon HD 6950, which comes with GPU clock speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also features 1408 SPUs, 88 TAUs, and 32 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 6950		3240 points
GeForce GTX 650		2263 points
	Difference: 977 (43%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon HD 6950		200 Watts
	Difference: 136 Watts (213%)

Memory Bandwidth

In theory, the Radeon HD 6950 should be a lot faster than the GeForce GTX 650 overall. (explain)

Radeon HD 6950		160000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 80000 (100%)

Texel Rate

The Radeon HD 6950 should be a lot (about 108%) better at AF than the GeForce GTX 650. (explain)

Radeon HD 6950		70400 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 36544 (108%)

Pixel Rate

The Radeon HD 6950 should be much (about 51%) better at anti-aliasing than the GeForce GTX 650, and will be capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 6950		25600 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 8672 (51%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.