GeForce GTX Titan vs Radeon HD 7770

Intro

Compare those specs to the Radeon HD 7770, which features a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

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 Titan		10162 points
Radeon HD 7770		3180 points
	Difference: 6982 (220%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the GeForce GTX Titan should be 301% quicker than the Radeon HD 7770 in general, because of its greater data rate. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 216384 (301%)

Texel Rate

The GeForce GTX Titan will be a lot (more or less 369%) more effective at AF than the Radeon HD 7770. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 147488 (369%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX Titan is the winner, by a large margin. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 24176 (151%)

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 MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, 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 amount of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's 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 rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.