GeForce GTX 965M 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 frequency at 600 MHz. The DDR2 memory works at a frequency of 500 MHz on this specific model. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 512MB		55 Watts
GeForce GTX 965M		60 Watts
	Difference: 5 Watts (9%)

Memory Bandwidth

The GeForce GTX 965M, in theory, should perform much faster than the Radeon HD 4650 512MB in general. (explain)

GeForce GTX 965M		64000 MB/sec
Radeon HD 4650 512MB		16000 MB/sec
	Difference: 48000 (300%)

Texel Rate

The GeForce GTX 965M will be much (more or less 215%) faster with regards to anisotropic filtering than the Radeon HD 4650 512MB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
Radeon HD 4650 512MB		19200 Mtexels/sec
	Difference: 41216 (215%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 965M is the winner, and very much so. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon HD 4650 512MB		4800 Mpixels/sec
	Difference: 25408 (529%)

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 past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.