GeForce GTX 650 Ti vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which features GPU clock speed of 723 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
Radeon R9 M395X		125 Watts
	Difference: 15 Watts (14%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M395X should in theory be much better than the GeForce GTX 650 Ti overall. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 73600 (85%)

Texel Rate

The Radeon R9 M395X will be quite a bit (more or less 56%) faster with regards to anisotropic filtering than the GeForce GTX 650 Ti. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 650 Ti		59392 Mtexels/sec
	Difference: 33152 (56%)

Pixel Rate

The Radeon R9 M395X should be quite a bit (about 56%) more effective at AA than the GeForce GTX 650 Ti, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTX 650 Ti		14848 Mpixels/sec
	Difference: 8288 (56%)

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 data (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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