GeForce GTX 650 Ti 2GB vs Radeon HD 5770

Intro

Compare all of that to the Radeon HD 5770, which has a core clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 650 Ti 2GB		110 Watts
	Difference: 2 Watts (2%)

Memory Bandwidth

In theory, the GeForce GTX 650 Ti 2GB should be 13% faster than the Radeon HD 5770 overall, due to its greater bandwidth. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 9600 (13%)

Texel Rate

The GeForce GTX 650 Ti 2GB is quite a bit (more or less 75%) more effective at anisotropic filtering than the Radeon HD 5770. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 25392 (75%)

Pixel Rate

The GeForce GTX 650 Ti 2GB is a little bit (approximately 9%) better at AA than the Radeon HD 5770, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 1248 (9%)

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 information (counted in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.