Geforce GTX 760 vs Radeon HD 4650 1GB

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
Geforce GTX 760		170 Watts
	Difference: 115 Watts (209%)

Memory Bandwidth

The Geforce GTX 760 should in theory be a lot faster than the Radeon HD 4650 1GB overall. (explain)

Geforce GTX 760		192256 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 169856 (758%)

Texel Rate

The Geforce GTX 760 will be quite a bit (more or less 390%) more effective at AF than the Radeon HD 4650 1GB. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 74880 (390%)

Pixel Rate

The Geforce GTX 760 is a lot (more or less 553%) more effective at AA than the Radeon HD 4650 1GB, and also will be able to handle higher resolutions more effectively. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 26560 (553%)

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 (in units of MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video 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 Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel 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 ability to reach the max fill rate.