GeForce GTX 650 vs Radeon HD 6850

Intro

Compare those specs to the Radeon HD 6850, which has core speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 960 SPUs as well as 48 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 6850		2395 points
GeForce GTX 650		2263 points
	Difference: 132 (6%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon HD 6850		127 Watts
	Difference: 63 Watts (98%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6850 should perform much faster than the GeForce GTX 650 in general. (explain)

Radeon HD 6850		128000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 48000 (60%)

Texel Rate

The Radeon HD 6850 will be just a bit (about 10%) more effective at AF than the GeForce GTX 650. (explain)

Radeon HD 6850		37200 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 3344 (10%)

Pixel Rate

The Radeon HD 6850 is a lot (more or less 47%) better at full screen anti-aliasing than the GeForce GTX 650, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 6850		24800 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 7872 (47%)

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 largest amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 processed per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.