GeForce 940M vs Radeon HD 5450

Intro

Compare all of that to the Radeon HD 5450, which has a GPU core clock speed of 650 MHz, and 512 MB of DDR3 memory set to run at 800 MHz through a 64-bit bus. It also features 80(16x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 940M should be 25% quicker than the Radeon HD 5450 overall, due to its greater data rate. (explain)

GeForce 940M		16000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The GeForce 940M is much (approximately 395%) faster with regards to texture filtering than the Radeon HD 5450. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 20528 (395%)

Pixel Rate

If using a high resolution is important to you, then the GeForce 940M is a better choice, by a large margin. (explain)

GeForce 940M		8576 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 5976 (230%)

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 (counted in MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per 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 - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.