GeForce GT 315 vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which features a clock frequency of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 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 M395X		125 Watts
	Difference: 73 Watts (140%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M395X should in theory be a lot better than the GeForce GT 315 overall. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 134720 (533%)

Texel Rate

The Radeon R9 M395X is quite a bit (more or less 825%) better at anisotropic filtering than the GeForce GT 315. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 82544 (825%)

Pixel Rate

The Radeon R9 M395X should be quite a bit (approximately 363%) more effective at FSAA than the GeForce GT 315, and able to handle higher resolutions better. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 18136 (363%)

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 information (in units of megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 reach the maximum fill rate.