AMD Polaris Thread: Radeon RX 480, RX 470 & RX 460 launching June 29th

[Armsdealer]

Let's not try to pussyfoot around what that witcher result is - the card is unfortunately throttling at 1266 @ 82c and that explains why overclocking on the reference is bad.

Have both companies seriously left the 300 USD price point without a good product?

Everyone and their mother has been waiting for this new node to buy the $300 gtx 970 / 390 equivalent and the fact is that everyone wants a card with a bit more juice than this one, but doesn't want to pay for the 1070.

I'll probably buy it anyway, but if I cab find a 1070 at 400 USD it's mighty tempting

 

[Elixer]

http://www.overclock.net/t/1603915/coming-soon-unofficial-polaris-owners-thread/40#post_25298305

I do not have steam. 3D Mark GPU Score 12508

my temp looks good even running the 3D Mark Fire Strike ... hovers around 45-50

So, around 980 level performance on old drivers (not release day drivers).
This test was done with a i3.

 

[Bacon1]

Let's not try to pussyfoot around what that witcher result is - the card is unfortunately throttling at 1266 @ 82c and that explains why overclocking on the reference is bad.

Have both companies seriously left the 300 USD price point without a good product?

Everyone and their mother has been waiting for this new node to buy the $300 gtx 970 / 390 equivalent and the fact is that everyone wants a card with a bit more juice than this one, but doesn't want to pay for the 1070.

I'll probably buy it anyway, but if I cab find a 1070 at 400 USD it's mighty tempting

Where do you see that happening? If its running @ 1266 it is not throttling, as that is the clock it should be running at. One of the other leaked videos shows it running witcher 3 @ 75c...

 

[Armsdealer]

Where do you see that happening? If its running @ 1266 it is not throttling, as that is the clock it should be running at. One of the other leaked videos shows it running witcher 3 @ 75c...

https://www.youtube.com/watch?v=eUiaJXLoKnE

That's the one I'm looking at. Maybe it's a unique scenario and won't be the case in general.

 

[Bacon1]

https://www.youtube.com/watch?v=eUiaJXLoKnE

That's the one I'm looking at. Maybe it's a unique scenario and won't be the case in general.

Thats the video showing witcher running @ 75-78c not 82c

They also test Ashes in DX11 mode?

Furmark runs cooler than gaming?

None of that makes any sense

I can't wait for actual reviews tomorrow

 

[escrow4]

Don't forget AMD drivers mature and improve over time. Unlike Nvidia's, which cripple instead. And since 1080p is still one of the main resolutions the 480 looks promising.

 

[AnotherGuy]

Im almost tempted to say:

Cmon Anandtech break the NDA and give us a review today... show u are still the "ONE" in tech news!

 

[Face2Face]

Few games test with OSD
https://www.youtube.com/watch?v=eUiaJXLoKnE

Notice the Core clock speeds are not maintaining 1266MHz, they jump around quite a bit. Looks kind of reminiscent of GPU boost. Looking at their GTA V results, they're pretty much in line with the leak from GGPC's numbers, maybe slightly better.

 

[linkgoron]

If it throttles on release drivers - AMD are idiots.

 

[Head1985]

rx480 architecture..32Rops confirmed
http://videocardz.com/61557/rajas-super-secret-cigar-stash

 

[Sweepr]

Also 36 CUs (2304 SPs) as expected.

 

[Bacon1]

Looks like we have VR improvements:

Audio:

Shaders:

Geometry:

Direct access to inline ISA:

Memory Compression:

 

[Head1985]

A lot of changes..If rx480 is slower than 390x then it is only because only 32rops.
390x-2816SP at 1050Mhz
rx480 2304SP at 1266Mhz

390x have 22% more SP
RX480 have 22% more clock
It should perform in worst case at 390x level with 64rops.

if its slower then we can blame only AMD for bad design with 32rops.

 

[Maverick177]

AMD obviously has an idea why P10 has 32 not 64 ROPs, perhaps RX495 dare I say.

 

[Hitman928]

The BiST technology is very interesting to me. I did some work on this early in grad school but in RFICs. I hope we get some more info on this.

 

[iiiankiii]

Cooler sucks? Probably. It doesn't look too good. I'm glad they didn't solder the heatsink to the VRM and Memory front plate. That makes it very easy to slap on a 3rd party cooler with the memory and VRM front plate intact. I have spare coolers around, so I'm not too worried. But, yeah, blower style coolers are the worst. Stay the heck away if you want to overclock.

AIB or slap a custom cooler on there.

 

[Bacon1]

AMD obviously has an idea why P10 has 32 not 64 ROPs, perhaps RX495 dare I say.

The x80 parts have been 32 for a while

380x holds its own against 390 / 970 well:

http://www.anandtech.com/show/9784/the-amd-radeon-r9-380x-review/12

 

[Head1985]

The x80 parts have been 32 for a while

380x holds its own against 390 / 970 well:

http://www.anandtech.com/show/9784/the-amd-radeon-r9-380x-review/12

Nope pixel fillrate is low.
Edit..Yep it looks like 380x is faster than 390.But that makes zero sense..

 

[IEC]

Nope pixel fillrate is low.
Edit..Yep it looks like 380x is faster than 390.But that makes zero sense..

You can't pick one spec in isolation and expect it to explain 100% of the performance scaling of a video card.

Thus the oft-repeated: wait for NDA to expire and real benchmarks/reviews

 

[Mopetar]

Hard to say if it's the ROPs or the lower memory bandwidth compared to the 390X. ROPs seem more likely since Polaris has memory compression whereas Hawaii didn't, although it remains to be seen exactly how much of the performance delta the memory compression accounts for.

 

[iiiankiii]

So it looks like we get improved tessellation through Primitive Discard Accelerator?

Also, based on that slide, Polaris 10's memory compression is much improved. Theoretically equivalent to 345GB/s of uncompressed memory bandwidth. I don't think memory bandwidth will be problem.

 

[Head1985]

rx480 have 256GB/s + 2 generations delta color compresion(first tonga and then polaris)
390x have 384GB/s with no delta color compresion.

rx480 should have same or better bandwidth(tonga memory compresion brings +20% avg bandwidth + polaris also have new compresion)

 

[Shivansps]

No details on the video encode/decode part?

 

[Stuka87]

The ROP count should only be an issue as resolution scales up. At 1080P, it should be a non issue. At 1440P and up, yes, it will have an impact. But I highly doubt very many people looking at this card want it for 1440P.

 

[Bacon1]

rx480 have 256GB/s + 2 generations delta color compresion(first tonga and then polaris)
390x have 384GB/s with no delta color compresion.

rx480 should have same or better bandwidth(tonga memory compresion brings +20% avg bandwidth + polaris also have new compresion)

Yep looks to be ~18-19% with Fury vs Hawaii and ~35-37% with Polaris, or almost the same gain with Polaris vs Fury that Fury had over Hawaii