GeForce GTX 650 Ti vs Radeon R9 M390X

Intro

Compare that to the Radeon R9 M390X, which has core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
Radeon R9 M390X		125 Watts
	Difference: 15 Watts (14%)

Memory Bandwidth

Performance-wise, the Radeon R9 M390X should theoretically be quite a bit superior to the GeForce GTX 650 Ti in general. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 73600 (85%)

Texel Rate

The Radeon R9 M390X is a lot (more or less 56%) more effective at anisotropic filtering than the GeForce GTX 650 Ti. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce GTX 650 Ti		59392 Mtexels/sec
	Difference: 33152 (56%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M390X is the winner, by a large margin. (explain)

Radeon R9 M390X		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: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher 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 amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.