GeForce GT 320 vs Radeon R9 M395X

Intro

Compare all that 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 makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon R9 M395X		125 Watts
	Difference: 82 Watts (191%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M395X should in theory be much superior to the GeForce GT 320 overall. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 134720 (533%)

Texel Rate

The Radeon R9 M395X will be quite a bit (approximately 614%) more effective at texture filtering than the GeForce GT 320. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 79584 (614%)

Pixel Rate

The Radeon R9 M395X will be a lot (approximately 436%) better at FSAA than the GeForce GT 320, and able to handle higher resolutions while still performing well. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 18816 (436%)

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 (measured in MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's bus 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 ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics 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 the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. 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 lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.