GeForce GTX 960M vs Radeon HD 4770

Intro

Compare those specifications to the Radeon HD 4770, which features core clock speeds of 750 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs as well as 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 960M		65 Watts
Radeon HD 4770		80 Watts
	Difference: 15 Watts (23%)

Memory Bandwidth

Performance-wise, the GeForce GTX 960M should theoretically be quite a bit better than the Radeon HD 4770 overall. (explain)

GeForce GTX 960M		64000 MB/sec
Radeon HD 4770		51200 MB/sec
	Difference: 12800 (25%)

Texel Rate

The GeForce GTX 960M is much (about 83%) more effective at AF than the Radeon HD 4770. (explain)

GeForce GTX 960M		43840 Mtexels/sec
Radeon HD 4770		24000 Mtexels/sec
	Difference: 19840 (83%)

Pixel Rate

The GeForce GTX 960M is much (more or less 46%) better at full screen anti-aliasing than the Radeon HD 4770, and also should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 960M		17536 Mpixels/sec
Radeon HD 4770		12000 Mpixels/sec
	Difference: 5536 (46%)

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: Bandwidth is the max amount of information (measured in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.