GeForce GTX 965M vs Radeon HD 4650 1GB

Intro

Compare those specifications to the Radeon HD 4650 1GB, which features 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 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
GeForce GTX 965M		60 Watts
	Difference: 5 Watts (9%)

Memory Bandwidth

The GeForce GTX 965M should theoretically perform a lot faster than the Radeon HD 4650 1GB overall. (explain)

GeForce GTX 965M		64000 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 41600 (186%)

Texel Rate

The GeForce GTX 965M should be much (more or less 215%) better at anisotropic filtering than the Radeon HD 4650 1GB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 41216 (215%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 965M is superior to the Radeon HD 4650 1GB, and very much so. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon HD 4650 1GB		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: Memory bandwidth is the max amount of data (measured in 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 its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.