GeForce GTX 1630 vs Radeon HD 4890 1GB

Intro

Compare those specs to the Radeon HD 4890 1GB, which comes with core clock speeds of 1000 MHz on the GPU, and 975 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1630		75 Watts
Radeon HD 4890 1GB		190 Watts
	Difference: 115 Watts (153%)

Memory Bandwidth

The Radeon HD 4890 1GB, in theory, should perform quite a bit faster than the GeForce GTX 1630 overall. (explain)

Radeon HD 4890 1GB		124800 MB/sec
GeForce GTX 1630		98304 MB/sec
	Difference: 26496 (27%)

Texel Rate

The GeForce GTX 1630 should be a lot (more or less 39%) faster with regards to texture filtering than the Radeon HD 4890 1GB. (explain)

GeForce GTX 1630		55680 Mtexels/sec
Radeon HD 4890 1GB		40000 Mtexels/sec
	Difference: 15680 (39%)

Pixel Rate

The GeForce GTX 1630 is a lot (about 74%) more effective at anti-aliasing than the Radeon HD 4890 1GB, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 1630		27840 Mpixels/sec
Radeon HD 4890 1GB		16000 Mpixels/sec
	Difference: 11840 (74%)

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 largest amount of information (in units of megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines 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 fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.