GeForce GTX 960M vs Radeon HD 4650 512MB

Intro

Compare that to the Radeon HD 4650 512MB, which uses a 55 nm design. AMD has clocked the core speed at 600 MHz. The DDR2 RAM runs at a frequency of 500 MHz on this card. It features 320(64x5) SPUs as well as 32 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 512MB		55 Watts
GeForce GTX 960M		65 Watts
	Difference: 10 Watts (18%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 960M should be much faster than the Radeon HD 4650 512MB overall. (explain)

GeForce GTX 960M		64000 MB/sec
Radeon HD 4650 512MB		16000 MB/sec
	Difference: 48000 (300%)

Texel Rate

The GeForce GTX 960M is a lot (more or less 128%) more effective at texture filtering than the Radeon HD 4650 512MB. (explain)

GeForce GTX 960M		43840 Mtexels/sec
Radeon HD 4650 512MB		19200 Mtexels/sec
	Difference: 24640 (128%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 960M is a better choice, and very much so. (explain)

GeForce GTX 960M		17536 Mpixels/sec
Radeon HD 4650 512MB		4800 Mpixels/sec
	Difference: 12736 (265%)

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 maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's 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 can be processed per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.