GeForce GTX Titan Black vs Radeon HD 4870 512MB

Intro

Compare those specs to the Radeon HD 4870 512MB, which comes with a clock speed of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 256-bit memory bus, and makes use of a 55 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 512MB		150 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 100 Watts (67%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX Titan Black should perform quite a bit faster than the Radeon HD 4870 512MB overall. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon HD 4870 512MB		115200 MB/sec
	Difference: 220800 (192%)

Texel Rate

The GeForce GTX Titan Black is a lot (about 611%) better at texture filtering than the Radeon HD 4870 512MB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon HD 4870 512MB		30000 Mtexels/sec
	Difference: 183360 (611%)

Pixel Rate

The GeForce GTX Titan Black will be quite a bit (more or less 256%) faster with regards to AA than the Radeon HD 4870 512MB, and also should be able to handle higher screen resolutions better. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon HD 4870 512MB		12000 Mpixels/sec
	Difference: 30672 (256%)

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 largest amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines 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 also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.