GeForce 8400 GS 512MB vs Radeon R9 M295X

Intro

Compare all that to the Radeon R9 M295X, which comes with GPU core speed of 750 MHz, and 4096 MB of GDDR5 memory set to run at 1375 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB		40 Watts
Radeon R9 M295X		125 Watts
	Difference: 85 Watts (213%)

Memory Bandwidth

Theoretically, the Radeon R9 M295X should be quite a bit faster than the GeForce 8400 GS 512MB in general. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce 8400 GS 512MB		6400 MB/sec
	Difference: 169600 (2650%)

Texel Rate

The Radeon R9 M295X is a lot (approximately 1746%) better at texture filtering than the GeForce 8400 GS 512MB. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce 8400 GS 512MB		5200 Mtexels/sec
	Difference: 90800 (1746%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M295X is a better choice, by a large margin. (explain)

Radeon R9 M295X		24000 Mpixels/sec
GeForce 8400 GS 512MB		2600 Mpixels/sec
	Difference: 21400 (823%)

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 transferred over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.