GeForce GT 315 vs Radeon R9 M295X

Intro

Compare that to the Radeon R9 M295X, which comes with core clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
Radeon R9 M295X		125 Watts
	Difference: 73 Watts (140%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M295X should be 596% quicker than the GeForce GT 315 overall, because of its higher bandwidth. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 150720 (596%)

Texel Rate

The Radeon R9 M295X is much (about 860%) faster with regards to anisotropic filtering than the GeForce GT 315. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 86000 (860%)

Pixel Rate

The Radeon R9 M295X will be much (approximately 380%) faster with regards to AA than the GeForce GT 315, and will be capable of handling higher resolutions better. (explain)

Radeon R9 M295X		24000 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 19000 (380%)

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 transported over the external memory interface within a second. It's worked out by multiplying the card's 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 better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.