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GeForce GTX 970M vs Radeon HD 4870 1GB

Intro

The GeForce GTX 970M uses a 28 nm design. nVidia has clocked the core speed at 924 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this specific card. It features 1280 SPUs along with 80 Texture Address Units and 48 ROPs.

Compare all that to the Radeon HD 4870 1GB, which has clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M 75 Watts
Radeon HD 4870 1GB 150 Watts
Difference: 75 Watts (100%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 1GB should be 20% quicker than the GeForce GTX 970M in general, due to its higher data rate. (explain)

Radeon HD 4870 1GB 115200 MB/sec
GeForce GTX 970M 96000 MB/sec
Difference: 19200 (20%)

Texel Rate

The GeForce GTX 970M will be a lot (approximately 146%) faster with regards to texture filtering than the Radeon HD 4870 1GB. (explain)

GeForce GTX 970M 73920 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 43920 (146%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 970M is a better choice, by far. (explain)

GeForce GTX 970M 44352 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 32352 (270%)

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 970M

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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 970M Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year October 7 2014 Jun 25, 2008
Code Name GM204 RV770 XT
Memory 3072 MB 1024 MB
Core Speed 924 MHz 750 MHz
Memory Speed 4000 MHz 3600 MHz
Power (Max TDP) 75 watts 150 watts
Bandwidth 96000 MB/sec 115200 MB/sec
Texel Rate 73920 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 44352 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 1280 800(160x5)
Texture Mapping Units 80 40
Render Output Units 48 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 956 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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 can be processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the 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 most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 970M

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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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