GeForce GTS 450 vs Radeon HD 6850

Intro

Compare those specifications to the Radeon HD 6850, which features clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 960 SPUs along with 48 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 6850		2395 points
GeForce GTS 450		1453 points
	Difference: 942 (65%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
Radeon HD 6850		127 Watts
	Difference: 21 Watts (20%)

Memory Bandwidth

Theoretically, the Radeon HD 6850 should be much faster than the GeForce GTS 450 overall. (explain)

Radeon HD 6850		128000 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 70272 (122%)

Texel Rate

The Radeon HD 6850 will be much (approximately 48%) faster with regards to anisotropic filtering than the GeForce GTS 450. (explain)

Radeon HD 6850		37200 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 12144 (48%)

Pixel Rate

The Radeon HD 6850 should be quite a bit (about 98%) faster with regards to AA than the GeForce GTS 450, and also will be capable of handling higher screen resolutions better. (explain)

Radeon HD 6850		24800 Mpixels/sec
GeForce GTS 450		12528 Mpixels/sec
	Difference: 12272 (98%)

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 data (measured in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.