GeForce GT 315 vs Radeon R9 M295X

Intro

Compare all that to the Radeon R9 M295X, which uses a 28 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 RAM works at a speed of 1375 MHz on this specific card. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

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

In theory, the Radeon R9 M295X should perform much faster than the GeForce GT 315 overall. (explain)

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

Texel Rate

The Radeon R9 M295X is a lot (about 860%) better at AF 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 quite a bit (more or less 380%) more effective at AA than the GeForce GT 315, and should be capable of handling higher screen resolutions without losing too much performance. (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: Bandwidth is the max amount of information (measured in MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units by the core 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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.