Radeon HD 7770 vs Radeon R9 280X

Intro

Compare those specs to the Radeon R9 280X, which makes use of a 28 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 memory works at a speed of 1500 MHz on this specific card. It features 2048 SPUs as well as 128 TAUs and 32 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 R9 280X		8886 points
Radeon HD 7770		3180 points
	Difference: 5706 (179%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Radeon R9 280X should perform a lot faster than the Radeon HD 7770 in general. (explain)

Radeon R9 280X		288000 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 216000 (300%)

Texel Rate

The Radeon R9 280X should be quite a bit (approximately 172%) faster with regards to texture filtering than the Radeon HD 7770. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 68800 (172%)

Pixel Rate

The Radeon R9 280X should be quite a bit (about 70%) faster with regards to anti-aliasing than the Radeon HD 7770, and also should be able to handle higher resolutions better. (explain)

Radeon R9 280X		27200 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 11200 (70%)

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 maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed 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 the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.