GeForce GTX 650 Ti 2GB vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which uses a 28 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 memory is set to run at a frequency of 1375 MHz on this specific card. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 35 Watts (47%)

Memory Bandwidth

In theory, the Radeon R9 M280X should be a little bit faster than the GeForce GTX 650 Ti 2GB overall. (explain)

Radeon R9 M280X		88000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 1600 (2%)

Texel Rate

The GeForce GTX 650 Ti 2GB is just a bit (approximately 18%) better at AF than the Radeon R9 M280X. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 8992 (18%)

Pixel Rate

The GeForce GTX 650 Ti 2GB will be a little bit (about 3%) faster with regards to full screen anti-aliasing than the Radeon R9 M280X, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 448 (3%)

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 data (in units of MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.