GeForce GTX 960M vs Radeon HD 4750

Intro

Compare those specs to the Radeon HD 4750, which has a clock speed of 730 MHz and a GDDR5 memory frequency of 800 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is made up of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 960M		65 Watts
Radeon HD 4750		75 Watts
	Difference: 10 Watts (15%)

Memory Bandwidth

In theory, the GeForce GTX 960M is 25% faster than the Radeon HD 4750 overall, because of its greater data rate. (explain)

GeForce GTX 960M		64000 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 12800 (25%)

Texel Rate

The GeForce GTX 960M is a lot (approximately 88%) more effective at AF than the Radeon HD 4750. (explain)

GeForce GTX 960M		43840 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 20480 (88%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 960M is superior to the Radeon HD 4750, by a large margin. (explain)

GeForce GTX 960M		17536 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 5856 (50%)

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 largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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