GeForce GT 320 vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which comes with clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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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

Performance-wise, the Radeon R9 M395X should theoretically be a lot superior to the GeForce GT 320 in general. (explain)

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

Texel Rate

The Radeon R9 M395X is a lot (about 614%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

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

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M395X is a better choice, by far. (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: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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