GeForce GT 340 vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which has GPU core speed of 723 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon R9 M395X		125 Watts
	Difference: 56 Watts (81%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M395X should be 194% faster than the GeForce GT 340 overall, because of its higher data rate. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 105600 (194%)

Texel Rate

The Radeon R9 M395X is much (about 426%) more effective at anisotropic filtering than the GeForce GT 340. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 74944 (426%)

Pixel Rate

The Radeon R9 M395X should be a lot (more or less 426%) better at full screen anti-aliasing than the GeForce GT 340, and capable of handling higher resolutions more effectively. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 18736 (426%)

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 megabytes per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core 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 is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.