Geforce GTX 760 vs Radeon HD 4870 512MB

Intro

Compare all of that to the Radeon HD 4870 512MB, which has a core clock speed of 750 MHz and a GDDR5 memory speed of 900 MHz. It also uses a 256-bit bus, and makes use of a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

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

The Geforce GTX 760 should theoretically perform much faster than the Radeon HD 4870 512MB overall. (explain)

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

Texel Rate

The Geforce GTX 760 is quite a bit (approximately 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

If using a high screen resolution is important to you, then the Geforce GTX 760 is a better choice, and very much so. (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: Bandwidth is the maximum amount of data (measured in 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 its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics 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 can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.