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GeForce GTX 460 1GB vs Radeon HD 4890 1GB

Intro

The GeForce GTX 460 1GB features a core clock frequency of 675 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It features 336 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon HD 4890 1GB, which features GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 975 MHz through a 256-bit bus. It also is comprised of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 1GB 160 Watts
Radeon HD 4890 1GB 190 Watts
Difference: 30 Watts (19%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4890 1GB should perform a bit faster than the GeForce GTX 460 1GB in general. (explain)

Radeon HD 4890 1GB 124800 MB/sec
GeForce GTX 460 1GB 115200 MB/sec
Difference: 9600 (8%)

Texel Rate

The Radeon HD 4890 1GB is a small bit (approximately 6%) faster with regards to AF than the GeForce GTX 460 1GB. (explain)

Radeon HD 4890 1GB 40000 Mtexels/sec
GeForce GTX 460 1GB 37800 Mtexels/sec
Difference: 2200 (6%)

Pixel Rate

The GeForce GTX 460 1GB should be much (more or less 35%) better at FSAA than the Radeon HD 4890 1GB, and able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 460 1GB 21600 Mpixels/sec
Radeon HD 4890 1GB 16000 Mpixels/sec
Difference: 5600 (35%)

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

Check prices at:

Radeon HD 4890 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 460 1GB Radeon HD 4890 1GB
Manufacturer nVidia AMD
Year July 2010 Apr 2, 2009
Code Name GF104 RV790 XT
Memory 1024 MB 1024 MB
Core Speed 675 MHz 1000 MHz
Memory Speed 3600 MHz 3900 MHz
Power (Max TDP) 160 watts 190 watts
Bandwidth 115200 MB/sec 124800 MB/sec
Texel Rate 37800 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 16000 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 959 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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 are processed in one second. This number is calculated by multiplying the total texture units 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 460 1GB

Amazon.com

Check prices at:

Radeon HD 4890 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.

Comments

One Response to “GeForce GTX 460 1GB vs Radeon HD 4890 1GB”
JUAL: (bandung) Downgrade… raja single GPU ATI 4XXX yg masih powerful | Toko Tukul says:

[...] 4890 1GB vs GTX 460 1GB Spoiler for test: http://www.hwcompare.com/8281/geforc…n-hd-4890-1gb/ [...]

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