R9 390 Outperforms GTX 480 At A Core Clock Of 272MHz And Consumes Less Than 40W

[FirstArmada]

So the GTX 480 only has 1,393 GFLOP/s of performance so what we do is take the # of cores from the R9 390 (2560) and multiply it by 2 (since GCN completes 2 Floating point operations per clock) which gives us 5120.

 

Then we take the 1,393,000 MFLOP/s and divide it by 5120 and that gives us 272.

 

That 272MHz is the core clock which the 390 surpasses the GTX 480! Also I underclocked the GPU to 360MHz to test this and it was using ~40 Watts and 272MHz will clearly use less than that.

 

It's cool to see how much the tech has advanced in only 6 years

[MoonlightSylv]

7 minutes ago, FirstArmada said:

So the GTX 480 only has 1,393 GFLOP/s of performance so what we do is take the # of cores from the R9 390 (2560) and multiply it by 2 (since GCN completes 2 Floating point operations per clock) which gives us 5120.

 

Then we take the 1,393,000 MFLOP/s and divide it by 5120 and that gives us 272.

 

That 272MHz is the core clock which the 390 surpasses the GTX 480! Also I underclocked the GPU to 360MHz to test this and it was using ~40 Watts and 272MHz will clearly use less than that.

 

It's cool to see how much the tech has advanced in only 6 years

That's crazy, imagine in 5 years when there's a $200-$300 GPU that destroys the GTX 1080 at 4k.

[naseem142]

For a moment i thought it said rx 480 , i was confused lol

[westport17]

Don't make us confused with nVidia's 480 and R9 390.
I just about to correct that GFLOPS 480 has.

[arnavvr]

5 minutes ago, naseem142 said:

For a moment i thought it said rx 480 , i was confused lol

 

3 minutes ago, westport17 said:

Don't make us confused with nVidia's 480 and R9 390.
I just about to correct that GFLOPS 480 has.

It says GTX in the title. 

[westport17]

2 minutes ago, arnavvr said:

 

It says GTX in the title. 

Yes, but who cares about GTX 480 these days? 480's associated with AMD right now. lol

*they've reached 1080 btw

[Teddy07]

1 hour ago, westport17 said:

Yes, but who cares about GTX 480 these days? 480's associated with AMD right now. lol

*they've reached 1080 btw

I am still rocking a gts 450 tho i am upgrading to a gtx 1070

[westport17]

41 minutes ago, Teddy07 said:

I am still rocking a gts 450 tho i am upgrading to a gtx 1070

That's a huge jump! You'll get 'performance shock' with that

[othertomperson]

And this is why TFLOPS is a useless measure of performance when you are comparing across architectures and across brands. It doesn't mean anything.

[Tom Hanks]

3 hours ago, FirstArmada said:

So the GTX 480 only has 1,393 GFLOP/s of performance so what we do is take the # of cores from the R9 390 (2560) and multiply it by 2 (since GCN completes 2 Floating point operations per clock) which gives us 5120.

 

Then we take the 1,393,000 MFLOP/s and divide it by 5120 and that gives us 272.

 

That 272MHz is the core clock which the 390 surpasses the GTX 480! Also I underclocked the GPU to 360MHz to test this and it was using ~40 Watts and 272MHz will clearly use less than that.

 

It's cool to see how much the tech has advanced in only 6 years

This just shows a normal progression in performance and architecture improvements.

 

Remember the GTX 480 is also 40NM, apart from the GTX 580, it's the limit of the 40NM silicon.