GeForce GTX 960 vs Radeon HD 4770

Intro

Compare those specifications to the Radeon HD 4770, which comes with a core clock speed of 750 MHz and a GDDR5 memory speed of 800 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It is made up of 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770		80 Watts
GeForce GTX 960		120 Watts
	Difference: 40 Watts (50%)

Memory Bandwidth

In theory, the GeForce GTX 960 should perform quite a bit faster than the Radeon HD 4770 in general. (explain)

GeForce GTX 960		112000 MB/sec
Radeon HD 4770		51200 MB/sec
	Difference: 60800 (119%)

Texel Rate

The GeForce GTX 960 will be much (about 201%) better at anisotropic filtering than the Radeon HD 4770. (explain)

GeForce GTX 960		72128 Mtexels/sec
Radeon HD 4770		24000 Mtexels/sec
	Difference: 48128 (201%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 960 is superior to the Radeon HD 4770, by far. (explain)

GeForce GTX 960		36064 Mpixels/sec
Radeon HD 4770		12000 Mpixels/sec
	Difference: 24064 (201%)

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 information (in units of MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on 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 memory bandwidth is, the lower the ability to get to the maximum fill rate.