GeForce GTX 780 Ti vs Radeon HD 7770

Intro

Compare those specifications to the Radeon HD 7770, which has GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 780 Ti		10900 points
Radeon HD 7770		3180 points
	Difference: 7720 (243%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 170 Watts (213%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 780 Ti should theoretically be much better than the Radeon HD 7770 overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 264000 (367%)

Texel Rate

The GeForce GTX 780 Ti is quite a bit (about 425%) better at texture filtering than the Radeon HD 7770. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 170000 (425%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 780 Ti is superior to the Radeon HD 7770, by a large margin. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 26000 (163%)

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 data (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 are applied per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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