GeForce GTX 650 vs Radeon HD 6950

Intro

Compare all that to the Radeon HD 6950, which has a GPU core clock speed of 800 MHz, and 1024 MB of GDDR5 memory running at 1250 MHz through a 256-bit bus. It also features 1408 Stream Processors, 88 TAUs, and 32 ROPs.

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

The Radeon HD 6950 should theoretically be quite a bit 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 much (approximately 108%) faster with regards to AF than the GeForce GTX 650. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6950 is superior to the GeForce GTX 650, by far. (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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses 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 amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.