GeForce GTX 650 vs Radeon HD 6870

Intro

Compare those specs to the Radeon HD 6870, which features core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 1120 SPUs as well as 56 Texture Address Units and 32 Rasterization Operator 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 6870		2870 points
GeForce GTX 650		2263 points
	Difference: 607 (27%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon HD 6870		151 Watts
	Difference: 87 Watts (136%)

Memory Bandwidth

The Radeon HD 6870 should in theory perform a lot faster than the GeForce GTX 650 overall. (explain)

Radeon HD 6870		134400 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 54400 (68%)

Texel Rate

The Radeon HD 6870 is quite a bit (approximately 49%) more effective at AF than the GeForce GTX 650. (explain)

Radeon HD 6870		50400 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 16544 (49%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 6870 is the winner, by a large margin. (explain)

Radeon HD 6870		28800 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 11872 (70%)

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 max amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed 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 the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.