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GeForce GT 230 vs Radeon HD 4670 1GB

Intro

The GeForce GT 230 comes with a GPU core speed of 550 MHz, and the 1536 MB of DDR3 RAM is set to run at 800 MHz through a 192-bit bus. It also is made up of 32 SPUs, 16 TAUs, and 8 ROPs.

Compare all of that to the Radeon HD 4670 1GB, which comes with a core clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1100 MHz. It also makes use of a 128-bit bus, and makes use of a 55 nm design. It is made up of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 230 65 Watts
Radeon HD 4670 1GB 70 Watts
Difference: 5 Watts (8%)

Memory Bandwidth

Theoretically, the GeForce GT 230 should perform just a bit faster than the Radeon HD 4670 1GB overall. (explain)

GeForce GT 230 38400 MB/sec
Radeon HD 4670 1GB 35200 MB/sec
Difference: 3200 (9%)

Texel Rate

The Radeon HD 4670 1GB will be a lot (more or less 173%) better at AF than the GeForce GT 230. (explain)

Radeon HD 4670 1GB 24000 Mtexels/sec
GeForce GT 230 8800 Mtexels/sec
Difference: 15200 (173%)

Pixel Rate

The Radeon HD 4670 1GB is much (about 36%) faster with regards to FSAA than the GeForce GT 230, and capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 4670 1GB 6000 Mpixels/sec
GeForce GT 230 4400 Mpixels/sec
Difference: 1600 (36%)

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 GT 230

Amazon.com

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Radeon HD 4670 1GB

Amazon.com

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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 4670 1GB
Manufacturer nVidia AMD
Year October 2009 Sep 10, 2008
Code Name GT218 RV730 XT
Memory 1536 MB 1024 MB
Core Speed 550 MHz 750 MHz
Memory Speed 1600 MHz 2200 MHz
Power (Max TDP) 65 watts 70 watts
Bandwidth 38400 MB/sec 35200 MB/sec
Texel Rate 8800 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 6000 Mpixels/sec
Unified Shaders 32 320(64x5)
Texture Mapping Units 16 32
Render Output Units 8 8
Bus Type DDR3 GDDR4/GDDR3/DDR3/DDR2
Bus Width 192-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 260 million 514 million
Bus PCIe 2.0 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.2 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write 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 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 many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GT 230

Amazon.com

Check prices at:

Radeon HD 4670 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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