GeForce GTX 650 Ti 2GB vs Radeon R9 390X 8G

Intro

Compare all that to the Radeon R9 390X 8G, which features a clock speed of 1050 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 512-bit bus, and uses a 28 nm design. It features 2816 SPUs, 176 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 165 Watts (150%)

Memory Bandwidth

The Radeon R9 390X 8G should theoretically perform a lot faster than the GeForce GTX 650 Ti 2GB overall. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 297600 (344%)

Texel Rate

The Radeon R9 390X 8G is a lot (about 211%) more effective at texture filtering than the GeForce GTX 650 Ti 2GB. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 125408 (211%)

Pixel Rate

The Radeon R9 390X 8G should be much (more or less 353%) faster with regards to AA than the GeForce GTX 650 Ti 2GB, and also will be capable of handling higher resolutions better. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 52352 (353%)

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 (counted in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen 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 by the core clock 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of 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.