GeForce GT 315 vs Radeon R5 M255

Intro

Compare those specs to the Radeon R5 M255, which has clock speeds of 940 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GT 315 is 58% quicker than the Radeon R5 M255 in general, due to its higher bandwidth. (explain)

GeForce GT 315		25280 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 9280 (58%)

Texel Rate

The Radeon R5 M255 is a lot (about 88%) faster with regards to anisotropic filtering than the GeForce GT 315. (explain)

Radeon R5 M255		18800 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 8800 (88%)

Pixel Rate

The Radeon R5 M255 should be much (approximately 50%) more effective at anti-aliasing than the GeForce GT 315, and also capable of handling higher resolutions without slowing down too much. (explain)

Radeon R5 M255		7520 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 2520 (50%)

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 (measured in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.