GeForce GTX 470 vs Radeon HD 7770

Intro

Compare those specs to the Radeon HD 7770, which features clock speeds of 1000 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator 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

Radeon HD 7770		3180 points
GeForce GTX 470		2937 points
	Difference: 243 (8%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 470		215 Watts
	Difference: 135 Watts (169%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 470 should be 86% faster than the Radeon HD 7770 in general, because of its greater bandwidth. (explain)

GeForce GTX 470		133920 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 61920 (86%)

Texel Rate

The Radeon HD 7770 should be a bit (about 18%) more effective at AF than the GeForce GTX 470. (explain)

Radeon HD 7770		40000 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 6008 (18%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 470 is superior to the Radeon HD 7770, by a large margin. (explain)

GeForce GTX 470		24280 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 8280 (52%)

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 max amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This 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 in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card 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 number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.