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GeForce GT 230 vs Radeon HD 4870 X2

Intro

The GeForce GT 230 comes with a GPU clock speed of 550 MHz, and the 1536 MB of DDR3 memory runs at 800 MHz through a 192-bit bus. It also is comprised of 32 Stream Processors, 16 TAUs, and 8 Raster Operation Units.

Compare that to the Radeon HD 4870 X2, which makes use of a 55 nm design. AMD has set the core speed at 750 MHz. The GDDR5 memory runs at a speed of 900 MHz on this specific card. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 230 65 Watts
Radeon HD 4870 X2 350 Watts
Difference: 285 Watts (438%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4870 X2 should in theory be much superior to the GeForce GT 230 overall. (explain)

Radeon HD 4870 X2 230400 MB/sec
GeForce GT 230 38400 MB/sec
Difference: 192000 (500%)

Texel Rate

The Radeon HD 4870 X2 is quite a bit (about 582%) faster with regards to AF than the GeForce GT 230. (explain)

Radeon HD 4870 X2 60000 Mtexels/sec
GeForce GT 230 8800 Mtexels/sec
Difference: 51200 (582%)

Pixel Rate

The Radeon HD 4870 X2 should be quite a bit (about 445%) better at anti-aliasing than the GeForce GT 230, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 4870 X2 24000 Mpixels/sec
GeForce GT 230 4400 Mpixels/sec
Difference: 19600 (445%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GT 230

Amazon.com

Check prices at:

Radeon HD 4870 X2

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 GT 230 Radeon HD 4870 X2
Manufacturer nVidia AMD
Year October 2009 Aug 12, 2008
Code Name GT218 R700
Memory 1536 MB 1024 MB (x2)
Core Speed 550 MHz 750 MHz (x2)
Memory Speed 1600 MHz 3600 MHz (x2)
Power (Max TDP) 65 watts 350 watts
Bandwidth 38400 MB/sec 230400 MB/sec
Texel Rate 8800 Mtexels/sec 60000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 24000 Mpixels/sec
Unified Shaders 32 800(160x5) (x2)
Texture Mapping Units 16 40 (x2)
Render Output Units 8 16 (x2)
Bus Type DDR3 GDDR5
Bus Width 192-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 260 million 956 million
Bus PCIe 2.0 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.2 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 230

Amazon.com

Check prices at:

Radeon HD 4870 X2

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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