GeForce 8800 GT 1GB vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which comes with clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. 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 much faster than the GeForce 8800 GT 1GB overall. (explain)

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

Texel Rate

The Radeon R9 M395X is much (more or less 175%) more effective at AF 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 is much (more or less 141%) better at anti-aliasing than the GeForce 8800 GT 1GB, and will be able to handle higher screen resolutions better. (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: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.