GeForce GTX 650 Ti 2GB vs Radeon HD 5870

Intro

Compare all that to the Radeon HD 5870, which makes use of a 40 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 memory works at a speed of 1200 MHz on this card. It features 1600(320x5) SPUs along with 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
Radeon HD 5870		188 Watts
	Difference: 78 Watts (71%)

Memory Bandwidth

The Radeon HD 5870 should theoretically be a lot faster than the GeForce GTX 650 Ti 2GB overall. (explain)

Radeon HD 5870		153600 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 67200 (78%)

Texel Rate

The Radeon HD 5870 is a small bit (approximately 14%) faster with regards to texture filtering than the GeForce GTX 650 Ti 2GB. (explain)

Radeon HD 5870		68000 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 8608 (14%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5870 is the winner, by far. (explain)

Radeon HD 5870		27200 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 12352 (83%)

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 maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that can be applied per second. This figure 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 number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines 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 output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.