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GeForce GTS 150 vs Radeon HD 4670 512MB

Intro

The GeForce GTS 150 comes with core clock speeds of 740 MHz on the GPU, and 500 MHz on the 1024 MB of GDDR3 memory. It features 128 SPUs along with 64 TAUs and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 4670 512MB, which features core speeds of 750 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR4/GDDR3/DDR3/DDR2 RAM. It features 320(64x5) SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB 70 Watts
GeForce GTS 150 141 Watts
Difference: 71 Watts (101%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should have the same performance. (explain)

Texel Rate

The GeForce GTS 150 should be quite a bit (approximately 97%) better at AF than the Radeon HD 4670 512MB. (explain)

GeForce GTS 150 47360 Mtexels/sec
Radeon HD 4670 512MB 24000 Mtexels/sec
Difference: 23360 (97%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTS 150 is the winner, by far. (explain)

GeForce GTS 150 11840 Mpixels/sec
Radeon HD 4670 512MB 6000 Mpixels/sec
Difference: 5840 (97%)

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 GTS 150

Amazon.com

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Radeon HD 4670 512MB

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 GTS 150 Radeon HD 4670 512MB
Manufacturer nVidia AMD
Year March 10, 2009 Sep 10, 2008
Code Name G92b RV730 XT
Memory 1024 MB 512 MB
Core Speed 740 MHz 750 MHz
Memory Speed 1000 MHz 2000 MHz
Power (Max TDP) 141 watts 70 watts
Bandwidth 32000 MB/sec 32000 MB/sec
Texel Rate 47360 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 11840 Mpixels/sec 6000 Mpixels/sec
Unified Shaders 128 320(64x5)
Texture Mapping Units 64 32
Render Output Units 16 8
Bus Type GDDR3 GDDR4/GDDR3/DDR3/DDR2
Bus Width 256-bit 128-bit
Fab Process 55 nm 55 nm
Transistors 754 million 514 million
Bus PCIe x16 2.0 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record 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 the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTS 150

Amazon.com

Check prices at:

Radeon HD 4670 512MB

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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