GeForce GTX 970 vs Radeon HD 7770

Intro

Compare that to the Radeon HD 7770, which features core speeds of 1000 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs 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

GeForce GTX 970		10867 points
Radeon HD 7770		3180 points
	Difference: 7687 (242%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 970		145 Watts
	Difference: 65 Watts (81%)

Memory Bandwidth

Performance-wise, the GeForce GTX 970 should theoretically be a lot superior to the Radeon HD 7770 in general. (explain)

GeForce GTX 970		224000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 152000 (211%)

Texel Rate

The GeForce GTX 970 is a lot (approximately 173%) more effective at anisotropic filtering than the Radeon HD 7770. (explain)

GeForce GTX 970		109200 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 69200 (173%)

Pixel Rate

The GeForce GTX 970 will be a lot (about 320%) more effective at FSAA than the Radeon HD 7770, and able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 51200 (320%)

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 (in units of megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.