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GeForce GTX 880M vs Radeon HD 4890 2GB

Intro

The GeForce GTX 880M makes use of a 28 nm design. nVidia has clocked the core speed at 954 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this specific card. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Compare those specifications to the Radeon HD 4890 2GB, which has a clock frequency of 1000 MHz and a GDDR5 memory frequency of 975 MHz. It also uses a 256-bit memory bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M 130 Watts
Radeon HD 4890 2GB 190 Watts
Difference: 60 Watts (46%)

Memory Bandwidth

In theory, the GeForce GTX 880M should perform a little bit faster than the Radeon HD 4890 2GB overall. (explain)

GeForce GTX 880M 128000 MB/sec
Radeon HD 4890 2GB 124800 MB/sec
Difference: 3200 (3%)

Texel Rate

The GeForce GTX 880M should be a lot (about 205%) better at texture filtering than the Radeon HD 4890 2GB. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon HD 4890 2GB 40000 Mtexels/sec
Difference: 82112 (205%)

Pixel Rate

The GeForce GTX 880M will be a lot (approximately 91%) more effective at FSAA than the Radeon HD 4890 2GB, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon HD 4890 2GB 16000 Mpixels/sec
Difference: 14528 (91%)

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

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GeForce GTX 880M

Amazon.com

Check prices at:

Radeon HD 4890 2GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 880M Radeon HD 4890 2GB
Manufacturer nVidia AMD
Year March 12 2014 Apr 2, 2009
Code Name GK104 RV790 XT
Memory 4096 MB 2048 MB
Core Speed 954 MHz 1000 MHz
Memory Speed 4000 MHz 3900 MHz
Power (Max TDP) 130 watts 190 watts
Bandwidth 128000 MB/sec 124800 MB/sec
Texel Rate 122112 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 30528 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 1536 800(160x5)
Texture Mapping Units 128 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 959 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 maximum number of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 880M

Amazon.com

Check prices at:

Radeon HD 4890 2GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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