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GeForce GTX 460 (OEM) vs Radeon HD 4650 1GB

Intro

The GeForce GTX 460 (OEM) comes with a core clock speed of 650 MHz and a GDDR5 memory frequency of 850 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is comprised of 336 SPUs, 56 TAUs, and 32 ROPs.

Compare that to the Radeon HD 4650 1GB, which makes use of a 55 nm design. AMD has clocked the core speed at 600 MHz. The GDDR3 RAM runs at a frequency of 700 MHz on this specific card. It features 320(64x5) SPUs along with 32 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB 55 Watts
GeForce GTX 460 (OEM) 150 Watts
Difference: 95 Watts (173%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 (OEM) should be a lot faster than the Radeon HD 4650 1GB in general. (explain)

GeForce GTX 460 (OEM) 108800 MB/sec
Radeon HD 4650 1GB 22400 MB/sec
Difference: 86400 (386%)

Texel Rate

The GeForce GTX 460 (OEM) will be quite a bit (about 90%) more effective at texture filtering than the Radeon HD 4650 1GB. (explain)

GeForce GTX 460 (OEM) 36400 Mtexels/sec
Radeon HD 4650 1GB 19200 Mtexels/sec
Difference: 17200 (90%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 460 (OEM) is superior to the Radeon HD 4650 1GB, by far. (explain)

GeForce GTX 460 (OEM) 20800 Mpixels/sec
Radeon HD 4650 1GB 4800 Mpixels/sec
Difference: 16000 (333%)

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 (OEM)

Amazon.com

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Radeon HD 4650 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 (OEM) Radeon HD 4650 1GB
Manufacturer nVidia AMD
Year October 2010 Sep 10, 2008
Code Name GF104 RV730 PRO
Memory 1024 MB 1024 MB
Core Speed 650 MHz 600 MHz
Memory Speed 3400 MHz 1400 MHz
Power (Max TDP) 150 watts 55 watts
Bandwidth 108800 MB/sec 22400 MB/sec
Texel Rate 36400 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 4800 Mpixels/sec
Unified Shaders 336 320(64x5)
Texture Mapping Units 56 32
Render Output Units 32 8
Bus Type GDDR5 GDDR3
Bus Width 256-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 514 million
Bus PCIe x16 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 are applied in one second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 460 (OEM)

Amazon.com

Check prices at:

Radeon HD 4650 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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