GeForce GTX 980M vs Radeon HD 4850 1GB

Intro

Compare those specs to the Radeon HD 4850 1GB, which has core clock speeds of 625 MHz on the GPU, and 993 MHz on the 1024 MB of GDDR4 RAM. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
Radeon HD 4850 1GB		110 Watts
	Difference: 10 Watts (10%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980M should be a lot faster than the Radeon HD 4850 1GB in general. (explain)

GeForce GTX 980M		128000 MB/sec
Radeon HD 4850 1GB		63552 MB/sec
	Difference: 64448 (101%)

Texel Rate

The GeForce GTX 980M will be a lot (approximately 299%) faster with regards to AF than the Radeon HD 4850 1GB. (explain)

GeForce GTX 980M		99648 Mtexels/sec
Radeon HD 4850 1GB		25000 Mtexels/sec
	Difference: 74648 (299%)

Pixel Rate

The GeForce GTX 980M will be much (more or less 564%) faster with regards to AA than the Radeon HD 4850 1GB, and will be capable of handling higher resolutions better. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon HD 4850 1GB		10000 Mpixels/sec
	Difference: 56432 (564%)

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 data (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum 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 better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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