GeForce 940M vs Radeon HD 5550

Intro

Compare that to the Radeon HD 5550, which has GPU core speed of 550 MHz, and 512 MB of DDR2 RAM set to run at 400 MHz through a 128-bit bus. It also is made up of 320(64x5) SPUs, 16 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce 940M should perform much faster than the Radeon HD 5550 overall. (explain)

GeForce 940M		16000 MB/sec
Radeon HD 5550		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The GeForce 940M is quite a bit (about 192%) faster with regards to anisotropic filtering than the Radeon HD 5550. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 5550		8800 Mtexels/sec
	Difference: 16928 (192%)

Pixel Rate

The GeForce 940M should be quite a bit (about 95%) faster with regards to full screen anti-aliasing than the Radeon HD 5550, and will be able to handle higher screen resolutions while still performing well. (explain)

GeForce 940M		8576 Mpixels/sec
Radeon HD 5550		4400 Mpixels/sec
	Difference: 4176 (95%)

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 largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics 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 the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.