GeForce GT 340 vs Radeon R9 M295X

Intro

Compare those specifications to the Radeon R9 M295X, which makes use of a 28 nm design. AMD has set the core speed at 750 MHz. The GDDR5 memory works at a frequency of 1375 MHz on this specific model. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340		69 Watts
Radeon R9 M295X		125 Watts
	Difference: 56 Watts (81%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M295X should in theory be quite a bit better than the GeForce GT 340 in general. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce GT 340		54400 MB/sec
	Difference: 121600 (224%)

Texel Rate

The Radeon R9 M295X is much (more or less 445%) better at anisotropic filtering than the GeForce GT 340. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GT 340		17600 Mtexels/sec
	Difference: 78400 (445%)

Pixel Rate

The Radeon R9 M295X is quite a bit (about 445%) faster with regards to full screen anti-aliasing than the GeForce GT 340, and also capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 M295X		24000 Mpixels/sec
GeForce GT 340		4400 Mpixels/sec
	Difference: 19600 (445%)

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 max amount of information (counted in MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units of the card by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.