GeForce GT 315 vs Radeon R7 250

Intro

Compare that to the Radeon R7 250, which comes with core speeds of 1000 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs along with 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
Radeon R7 250		65 Watts
	Difference: 13 Watts (25%)

Memory Bandwidth

Performance-wise, the Radeon R7 250 should theoretically be quite a bit superior to the GeForce GT 315 overall. (explain)

Radeon R7 250		73600 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 48320 (191%)

Texel Rate

The Radeon R7 250 is much (approximately 140%) better at texture filtering than the GeForce GT 315. (explain)

Radeon R7 250		24000 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 14000 (140%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R7 250 is the winner, by far. (explain)

Radeon R7 250		8000 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 3000 (60%)

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 max amount of information (measured in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 amount of texture map elements (texels) that can be processed per 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 this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.