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Radeon HD 4870 1GB vs Radeon R7 260X

Intro

The Radeon HD 4870 1GB 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.

Compare those specs to the Radeon R7 260X, which uses a 28 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 memory works at a frequency of 1625 MHz on this model. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X 115 Watts
Radeon HD 4870 1GB 150 Watts
Difference: 35 Watts (30%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4870 1GB should in theory be a small bit better than the Radeon R7 260X in general. (explain)

Radeon HD 4870 1GB 115200 MB/sec
Radeon R7 260X 104000 MB/sec
Difference: 11200 (11%)

Texel Rate

The Radeon R7 260X will be much (approximately 105%) faster with regards to AF than the Radeon HD 4870 1GB. (explain)

Radeon R7 260X 61600 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 31600 (105%)

Pixel Rate

The Radeon R7 260X is a lot (approximately 47%) more effective at AA than the Radeon HD 4870 1GB, and will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R7 260X 17600 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 5600 (47%)

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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Radeon HD 4870 1GB

Amazon.com

Check prices at:

Radeon R7 260X

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 Radeon HD 4870 1GB Radeon R7 260X
Manufacturer AMD AMD
Year Jun 25, 2008 October 2013
Code Name RV770 XT Bonaire XTX
Memory 1024 MB 2048 MB
Core Speed 750 MHz 1100 MHz
Memory Speed 3600 MHz 6500 MHz
Power (Max TDP) 150 watts 115 watts
Bandwidth 115200 MB/sec 104000 MB/sec
Texel Rate 30000 Mtexels/sec 61600 Mtexels/sec
Pixel Rate 12000 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 800(160x5) 896
Texture Mapping Units 40 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 956 million 2080 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units of the card by the core 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 4870 1GB

Amazon.com

Check prices at:

Radeon R7 260X

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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