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GeForce GTS 450 1GB vs Radeon HD 4870 512MB
Intro
The GeForce GTS 450 1GB comes with a GPU clock speed of 783 MHz, and the 1024 MB of GDDR5 RAM runs at 902 MHz through a 128-bit bus. It also features 192 SPUs, 32 TAUs, and 16 ROPs.Compare those specs to the Radeon HD 4870 512MB, which has a clock speed of 750 MHz and a GDDR5 memory speed of 900 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GTS 450 1GB |
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106 Watts |
| Radeon HD 4870 512MB |
|
150 Watts |
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Memory Bandwidth
In theory, the Radeon HD 4870 512MB should be 100% faster than the GeForce GTS 450 1GB in general, due to its greater bandwidth. (explain)
| Radeon HD 4870 512MB |
|
115200 MB/sec |
| GeForce GTS 450 1GB |
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57728 MB/sec |
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Texel Rate
The Radeon HD 4870 512MB is a little bit (about 20%) faster with regards to texture filtering than the GeForce GTS 450 1GB. (explain)| Radeon HD 4870 512MB |
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30000 Mtexels/sec |
| GeForce GTS 450 1GB |
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25056 Mtexels/sec |
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Pixel Rate
If running with high levels of AA is important to you, then the GeForce GTS 450 1GB is superior to the Radeon HD 4870 512MB, but only just. (explain)| GeForce GTS 450 1GB |
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12528 Mpixels/sec |
| Radeon HD 4870 512MB |
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12000 Mpixels/sec |
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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
GeForce GTS 450 1GBAmazon.com
Check prices at:
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Radeon HD 4870 512MBAmazon.com
Check prices at:
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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
| Model | GeForce GTS 450 1GB | Radeon HD 4870 512MB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | September 2010 | Jun 25, 2008 |
| Code Name | GF106 | RV770 XT |
| Memory | 1024 MB | 512 MB |
| Core Speed | 783 MHz | 750 MHz |
| Memory Speed | 3608 MHz | 3600 MHz |
| Power (Max TDP) | 106 watts | 150 watts |
| Bandwidth | 57728 MB/sec | 115200 MB/sec |
| Texel Rate | 25056 Mtexels/sec | 30000 Mtexels/sec |
| Pixel Rate | 12528 Mpixels/sec | 12000 Mpixels/sec |
| Unified Shaders | 192 | 800(160x5) |
| Texture Mapping Units | 32 | 40 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 256-bit |
| Fab Process | 40 nm | 55 nm |
| Transistors | 1170 million | 956 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: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type memory, 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 AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines 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 output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.
GeForce GTS 450 1GBAmazon.com
Check prices at:
|
Radeon HD 4870 512MBAmazon.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
2 Responses to “GeForce GTS 450 1GB vs Radeon HD 4870 512MB”Well, I'm happy. I just bought the 4870, and it's nice to know I'm finally running faster than my friend Jessie.
Doesn't make sense, though. He can run Crysis 2 on Extreme at around 30-40 fps, whereas I run it at around 25-35 fps.
I'd say it's our difference in CPU power.
Mine: Phenom II x3 720 2.8ghz
His: Phenom II x4 830 2.8ghz.
Or maybe it's because the 4870 is not a DX11 card.
What do you think?
CPU. OC that beast to 3.2GHz, and you may get his FPS.
It's definitely not that it isn't a DX11 Card, Crysis 2 isn't a DX11 game.