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| | Sapphire Radeon R9 280 vs Radeon R9 270X |
Released March, 2014
Sapphire Radeon R9 280
- 850 MHz
- 3 GB GDDR5
by Slobodan-Simic (Aug, 2014)Despite these few leaked pictures, we still do not have precise specifications for the upcoming R9 285 graphics card as it is still not clear if it will have 1792 or 2048 Stream Processors.
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Released October, 2013
Sapphire Radeon R9 270X
- 1.1 GHz
- 2 GB GDDR5
by techPowerUp!With a core clock of 1100 MHz, the GPU overclock isn't as large as on other cards, but the 25 MHz memory OC will help with performance.
Cast your vote Do you agree or disagree with GPUBoss?
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Differences What are the advantages of each
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| More memory | 3,072 MB | vs | 2,048 MB | 50% more memory | |||
|---|---|---|---|---|---|---|---|
| More shading units | 1,792 | vs | 1,280 | 512 more shading units | |||
| More texture mapping units | 112 | vs | 80 | 32 more texture mapping units | |||
| Wider memory bus | 384 bit | vs | 256 bit | 50% wider memory bus | |||
| More compute units | 28 | vs | 20 | 8 more compute units | |||
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| Significantly higher clock speed | 1,100 MHz | vs | 850 MHz | Around 30% higher clock speed | |||
| Higher effective memory clock speed | 6,000 MHz | vs | 5,000 MHz | 20% higher effective memory clock speed | |||
| Significantly higher turbo clock speed | 1,150 MHz | vs | 940 MHz | More than 20% higher turbo clock speed | |||
| Higher pixel rate | 35.2 GPixel/s | vs | 27.2 GPixel/s | Around 30% higher pixel rate | |||
| Higher memory clock speed | 1,500 MHz | vs | 1,250 MHz | 20% higher memory clock speed | |||
Features Key features of the Radeon R9 280 vs Radeon R9 270X
pixel rate Number of pixels a graphics card can render to the screen every second
Radeon R9 280
27.2 GPixel/s
Radeon R9 270X
35.2 GPixel/s
Radeon R9 270X | by techPowerUp!But the difference is quite big, bigger than the extra performance delivered, which has the R9 270X HAWK fall behind the HD 7950 in performance per watt.
texture rate Speed at which a graphics card can perform texture mapping
Radeon R9 280
95.2 GTexel/s
Radeon R9 270X
88 GTexel/s
Radeon R9 270X | by techPowerUp!The card is overclocked out of the box, giving it a 3% performance advantage over the stock R9 270X, which matches the HD 7950 in performance and is 11% faster than the HD 7870.
floating point performance How fast the gpu can crunch numbers
Radeon R9 280
3,046 GFLOPS
Radeon R9 270X
2,816 GFLOPS
Radeon R9 270X | by techPowerUp!It makes use of Bethesda's Creation Engine which isn't visually intensive in that it doesn't use taxing graphics features; instead, the game's presentation itself, with large open worlds, ends up taxing your hardware.
shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading
Radeon R9 280
1,792
Radeon R9 270X
1,280
Radeon R9 270X | by techPowerUp!AMD's Pitcairn graphics processor uses the GCN shader architecture.
texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes
Radeon R9 280
112
Radeon R9 270X | by techPowerUp!The 28 nm "Pitcairn" silicon, on which the Radeon R9 270X is based, features 1,280 stream processors based on the Graphics CoreNext micro-architecture, 80 texture memory units (TMUs), 32 raster operations units (ROPs), and a 256-bit wide GDDR5 memory interface, holding 2 GB of memory.
compute units Discrete cores within the GPU
Radeon R9 280 | by hassan-mujtaba (Sep, 2014)Getting right in to the technical aspects of the card, the Radeon R9 285 will feature 28 Compute Units which mean we are looking at a total of 1792 stream processors, 112 texture mapping units and 32 raster operation units.
Specifications Full list of technical specs
gpu | Radeon R9 280 | vs | Radeon R9 270X |
|---|---|---|---|
| GPU brand | AMD | AMD | |
| GPU name | Tahiti | Curacao | |
| Market | Desktop | Desktop | |
| Clock speed | 850 MHz | 1,100 MHz | |
| Turbo clock speed | 940 MHz | 1,150 MHz | |
| Is dual GPU | No | No | |
| Reference card | AMD Radeon R9 280 827 MHz 3 GB | AMD Radeon R9 270X 1 GHz 2 GB | |
raw performance | |||
| Shading units | 1,792 | 1,280 | |
| Texture mapping units | 112 | 80 | |
| Render output processors | 32 | 32 | |
| Compute units | 28 | 20 | |
| Pixel rate | 27.2 GPixel/s | 35.2 GPixel/s | |
| Texture rate | 95.2 GTexel/s | 88 GTexel/s | |
| Floating-point performance | 3,046 GFLOPS | 2,816 GFLOPS | |
memory | Radeon R9 280 | vs | Radeon R9 270X |
|---|---|---|---|
| Memory clock speed | 1,250 MHz | 1,500 MHz | |
| Effective memory clock speed | 5,000 MHz | 6,000 MHz | |
| Memory bus | 384 bit | 256 bit | |
| Memory | 3,072 MB | 2,048 MB | |
| Memory type | GDDR5 | GDDR5 | |
noise and power | |||
| TDP | 200W | 180W | |





