GeForce GTX Titan Black vs Radeon HD 4770

Intro

Compare all that to the Radeon HD 4770, which comes with core clock speeds of 750 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770		80 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 170 Watts (213%)

Memory Bandwidth

In theory, the GeForce GTX Titan Black should perform a lot faster than the Radeon HD 4770 overall. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon HD 4770		51200 MB/sec
	Difference: 284800 (556%)

Texel Rate

The GeForce GTX Titan Black will be quite a bit (approximately 789%) better at anisotropic filtering than the Radeon HD 4770. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon HD 4770		24000 Mtexels/sec
	Difference: 189360 (789%)

Pixel Rate

The GeForce GTX Titan Black will be quite a bit (approximately 256%) better at anti-aliasing than the Radeon HD 4770, and should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon HD 4770		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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.