Geforce GTX 760 vs Radeon HD 4850 2GB

Intro

Compare that to the Radeon HD 4850 2GB, which comes with clock speeds of 625 MHz on the GPU, and 993 MHz on the 2048 MB of GDDR4 memory. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 2GB		110 Watts
Geforce GTX 760		170 Watts
	Difference: 60 Watts (55%)

Memory Bandwidth

Performance-wise, the Geforce GTX 760 should theoretically be quite a bit better than the Radeon HD 4850 2GB in general. (explain)

Geforce GTX 760		192256 MB/sec
Radeon HD 4850 2GB		63552 MB/sec
	Difference: 128704 (203%)

Texel Rate

The Geforce GTX 760 should be a lot (approximately 276%) better at AF than the Radeon HD 4850 2GB. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 4850 2GB		25000 Mtexels/sec
	Difference: 69080 (276%)

Pixel Rate

The Geforce GTX 760 is much (about 214%) more effective at FSAA than the Radeon HD 4850 2GB, and capable of handling higher screen resolutions more effectively. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 4850 2GB		10000 Mpixels/sec
	Difference: 21360 (214%)

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 data (in units of megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR 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 calculated by multiplying the total texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount 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 colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.