GeForce 8800 GT 1GB vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which has core clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
Radeon R9 M395X		125 Watts
	Difference: 20 Watts (19%)

Memory Bandwidth

In theory, the Radeon R9 M395X should be 178% quicker than the GeForce 8800 GT 1GB in general, due to its greater data rate. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 102400 (178%)

Texel Rate

The Radeon R9 M395X will be much (about 175%) more effective at anisotropic filtering than the GeForce 8800 GT 1GB. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 58944 (175%)

Pixel Rate

The Radeon R9 M395X should be a lot (more or less 141%) better at full screen anti-aliasing than the GeForce 8800 GT 1GB, and also able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 13536 (141%)

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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.