GeForce GTX 860M vs Radeon HD 4650 1GB

Intro

Compare those specs to the Radeon HD 4650 1GB, which comes with clock speeds of 600 MHz on the GPU, and 700 MHz on the 1024 MB of GDDR3 memory. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
Radeon HD 4650 1GB		55 Watts
	Difference: 10 Watts (22%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 860M should theoretically be much superior to the Radeon HD 4650 1GB overall. (explain)

GeForce GTX 860M		64000 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 41600 (186%)

Texel Rate

The GeForce GTX 860M is quite a bit (more or less 299%) better at anisotropic filtering than the Radeon HD 4650 1GB. (explain)

GeForce GTX 860M		76512 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 57312 (299%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 860M is superior to the Radeon HD 4650 1GB, and very much so. (explain)

GeForce GTX 860M		12752 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 7952 (166%)

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 (in units of MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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 memory bandwidth is, the lower the potential to reach the maximum fill rate.