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Differences What are the advantages of each

Front view of Radeon R9 280X

Reasons to consider the
Generic Radeon R9 280X

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Higher effective memory clock speed 6,000 MHz vs 5,000 MHz 20% higher effective memory clock speed
Higher turbo clock speed 1,000 MHz vs 933 MHz More than 5% higher turbo clock speed
Higher memory clock speed 1,500 MHz vs 1,250 MHz 20% higher memory clock speed
Front view of Radeon R9 280

Reasons to consider the
AMD Radeon R9 280

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Lower TDP 200W vs 250W 20% lower TDP

Features Key features of the Radeon R9 280X  vs 280 

pixel rate Number of pixels a graphics card can render to the screen every second

Radeon R9 280X
27.2 GPixel/s
Radeon R9 280
26.5 GPixel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 280X
3,482 GFLOPS
Radeon R9 280
2,964 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

render output processors GPU commponents responsible for transform pixels as they flow between memory buffers

compute units Discrete cores within the GPU

Specifications Full list of technical specs


Radeon R9 280X  vs
GPU name Tahiti Tahiti
Market Desktop Desktop
Clock speed 850 MHz 827 MHz
Turbo clock speed 1,000 MHz 933 MHz
Is dual GPU No No
Reference card AMD Radeon R9 280X 850 MHz 3 GB None

raw performance

Shading units 2,048 1,792
Texture mapping units 128 112
Render output processors 32 32
Compute units 32 28
Pixel rate 27.2 GPixel/s 26.5 GPixel/s
Floating-point performance 3,482 GFLOPS 2,964 GFLOPS


Radeon R9 280X  vs
Memory clock speed 1,500 MHz 1,250 MHz
Effective memory clock speed 6,000 MHz 5,000 MHz
Memory bus 384 bit 384 bit
Memory 3,072 MB 3,072 MB
Memory type GDDR5 GDDR5

noise and power

TDP 250W 200W

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Showing 17 comments.
How well would these perform with an athlon x4 860k? Any bottlenecking from the CPU?
Haha. You made my day xD
I got 280 and it`s bang for the buck ... run same like 280x and almost like 290 , and way cheaper then 290
damn in my country R9 280x and R9 280 are 10 dollar diff
Yup, with that much money better spending a bit more on a R9 290
just bought a 280 and overclocked it. it doesnt worth paying more for x.
Why do other sites list the compute power at 3.34 TFLOPS? So does Wiki for the same architecture? I believe most follow the formula of (2 x shader count) x (clock speed) which unboosted would give the card 3,046,400 Single precision floating point operations per second, and boosted to the 940MHz clock 3,368,960 FLOPS. Is this formula flawed?
R9 280 is good enough to run every game on High / Ultra with no problems, so there is no real reason to go for 280X as it's way more expensive but the difference is minimal
Which one should i buy? The r9 280 is good but the r9 280x has more gflops, I will use this graphics card for gaming so which one would you guys recommend
i think he was ironistic and he's pretty funny too
grab a newer fx chip like a 6300 and your frrame rate may almost double i myself went from a athlon iix2 255 dual core to a fx6300 and my fps tripled on bf3 and 4
doesnt worth the 80 dollar diff
well if u are going to buy 280x just to be like your friend, u are pretty stupid i guess ...
Yeah but that X looks sooo cool. Say your friend has a 280 and is like "OMG, I GOT a 280 today!!" then you say "Yeah, well I got a fuckin 280X...TAKE THAT"
Yhea, I have a athlon ii 4x 630 from 2008 and it's clocked to 3GHz and 4gb ram and I run pretty good at battlefield 4 high at 50 frames
Hi, i want to buy the R9 280 but i got pci 2.0 and cpu i7 920 with 6gb ram (tripple channel) is it worth or there would be a lot of bottleneck?
Considering the 280x costs 300€ and the 280 200€, there is no real advantage going with the first :P
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