Radeon HD 7770 vs Radeon R9 280

Intro

Compare all that to the Radeon R9 280, which makes use of a 28 nm design. AMD has clocked the core speed at 933 MHz. The GDDR5 memory works at a frequency of 1250 MHz on this card. It features 1792 SPUs along with 112 Texture Address Units and 32 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

Radeon R9 280		7961 points
Radeon HD 7770		3180 points
	Difference: 4781 (150%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon R9 280		250 Watts
	Difference: 170 Watts (213%)

Memory Bandwidth

The Radeon R9 280 should theoretically be quite a bit faster than the Radeon HD 7770 overall. (explain)

Radeon R9 280		240000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 168000 (233%)

Texel Rate

The Radeon R9 280 will be quite a bit (more or less 161%) faster with regards to texture filtering than the Radeon HD 7770. (explain)

Radeon R9 280		104496 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 64496 (161%)

Pixel Rate

The Radeon R9 280 should be quite a bit (approximately 87%) more effective at anti-aliasing than the Radeon HD 7770, and also capable of handling higher resolutions better. (explain)

Radeon R9 280		29856 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 13856 (87%)

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 max amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 amount of texture map elements (texels) that can be applied in one second. This figure is worked out 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 the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock 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 rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.