GeForce RTX 4080 vs Radeon R9 280

Intro

Compare that to the Radeon R9 280, which uses a 28 nm design. AMD has clocked the core speed at 933 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this model. It features 1792 SPUs as well as 112 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 280		250 Watts
GeForce RTX 4080		320 Watts
	Difference: 70 Watts (28%)

Memory Bandwidth

Performance-wise, the GeForce RTX 4080 should theoretically be a lot superior to the Radeon R9 280 in general. (explain)

GeForce RTX 4080		734003 MB/sec
Radeon R9 280		240000 MB/sec
	Difference: 494003 (206%)

Texel Rate

The GeForce RTX 4080 is quite a bit (about 541%) more effective at texture filtering than the Radeon R9 280. (explain)

GeForce RTX 4080		670320 Mtexels/sec
Radeon R9 280		104496 Mtexels/sec
	Difference: 565824 (541%)

Pixel Rate

The GeForce RTX 4080 is a lot (about 727%) more effective at anti-aliasing than the Radeon R9 280, and will be capable of handling higher resolutions better. (explain)

GeForce RTX 4080		246960 Mpixels/sec
Radeon R9 280		29856 Mpixels/sec
	Difference: 217104 (727%)

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 information (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to get to the maximum fill rate.