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GeForce GTX 460 1GB vs Radeon HD 4870 1GB

Intro

The GeForce GTX 460 1GB uses a 40 nm design. nVidia has set the core speed at 675 MHz. The GDDR5 RAM is set to run at a speed of 900 MHz on this card. It features 336 SPUs along with 56 TAUs and 32 ROPs.

Compare all that to the Radeon HD 4870 1GB, which comes with GPU clock speed of 750 MHz, and 1024 MB of GDDR5 memory set to run at 900 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 1GB 150 Watts
GeForce GTX 460 1GB 160 Watts
Difference: 10 Watts (7%)

Memory Bandwidth

Both cards have the exact same memory bandwidth, so in theory they should perform exactly the same. (explain)

Texel Rate

The GeForce GTX 460 1GB will be a lot (approximately 26%) faster with regards to AF than the Radeon HD 4870 1GB. (explain)

GeForce GTX 460 1GB 37800 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 7800 (26%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 1GB is superior to the Radeon HD 4870 1GB, by far. (explain)

GeForce GTX 460 1GB 21600 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 9600 (80%)

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 460 1GB

Amazon.com

Radeon HD 4870 1GB

Amazon.com

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 460 1GB Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year July 2010 Jun 25, 2008
Code Name GF104 RV770 XT
Memory 1024 MB 1024 MB
Core Speed 675 MHz 750 MHz
Memory Speed 3600 MHz 3600 MHz
Power (Max TDP) 160 watts 150 watts
Bandwidth 115200 MB/sec 115200 MB/sec
Texel Rate 37800 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 336 800(160x5)
Texture Mapping Units 56 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 460 1GB

Amazon.com

Radeon HD 4870 1GB

Amazon.com

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.

Comments

One Response to “GeForce GTX 460 1GB vs Radeon HD 4870 1GB”
Mike says:

When will we see the addition of the new AMD/Radeon 7000 series added as well as the new NVidia 600 series?

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