Geforce GTX 760 vs Radeon HD 4870 512MB

Intro

Compare all of that to the Radeon HD 4870 512MB, which has GPU core speed of 750 MHz, and 512 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 512MB		150 Watts
Geforce GTX 760		170 Watts
	Difference: 20 Watts (13%)

Memory Bandwidth

Theoretically, the Geforce GTX 760 should perform quite a bit faster than the Radeon HD 4870 512MB in general. (explain)

Geforce GTX 760		192256 MB/sec
Radeon HD 4870 512MB		115200 MB/sec
	Difference: 77056 (67%)

Texel Rate

The Geforce GTX 760 should be much (about 214%) more effective at texture filtering than the Radeon HD 4870 512MB. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 4870 512MB		30000 Mtexels/sec
	Difference: 64080 (214%)

Pixel Rate

The Geforce GTX 760 is quite a bit (approximately 161%) better at FSAA than the Radeon HD 4870 512MB, and also will be able to handle higher screen resolutions while still performing well. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 4870 512MB		12000 Mpixels/sec
	Difference: 19360 (161%)

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 maximum amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.