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AMD RX 480 Review Thread - Page 220

post #2191 of 3674
I think i'm going to buy a 480 even if i have a 290x. I just want to see how much can you push that card because i think there is a good overclocking headroom, potentially it could beat my 290x, i hope so.

EDIT: if you give me some feedback on the memory think it would be much appreciated. If i (and many other people) can save a bit and buy the 4gb model and upgdare it to a 8gb just with a bios flash would be great. Page 214 thumb.gif
Edited by NaXter24R - 7/2/16 at 4:18pm
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post #2192 of 3674
Quote:
Originally Posted by tkenietz View Post

That backplate is a bit wild compared to the rest of the card, but overall I like it thumb.gif

hopefully reviewers get them in hand sometime soon

Reminds me of Transformers. I can dig it though.

Excited to see reviews on the AIB 480's but look more forward to OCN members getting their hands on them.
Edited by BiG StroOnZ - 7/2/16 at 4:40pm
post #2193 of 3674
Quote:
Originally Posted by Mad Pistol View Post

Yea, that's the important thing to remember. RX 480's are sold out EVERYWHERE, and there was a lot of stock at launch. When was the last time that AMD had this much success with a product launch?
So good work AMD, people here and in other pc enthusiast forums tend to think that the majority of people care aboute 400-600$ gpus, overclocking powerdraw throttling .......... wake up we are the minority wink.gif
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post #2194 of 3674
I am conflicted, I want to return my XFX cards for those nitros but damn I like the look of reference cards. These are also planned to go into a SG05 and node 304 when Vega drops so I know the reference design would help in those cases. Decisions decisions...
 
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post #2195 of 3674
Quote:
Originally Posted by PontiacGTX View Post

tessellation is now at Maxwell Level or so


You have 4 Geometry Processors each running at 1266MHz. If you multiply 4x1266MHz you get 5064 or 5.1 Gtris/s. Perfect scaling would deliver that amount of GTris/s and we get 4.7 GTris/s for the List benchmark and surprisingly we get even higher performance for Strip (showing that the Hardware Discard Accelerator is working perfectly). In other words... Tessellation is now on par with Maxwell and Pascal efficiency wise (per Geometry processor).

The R9 380x also had 4 Geometry Processors clocked at 975MHz. If you multiply you get 3900 or 3.9 GTris/s. The list performance of 3.7 GTris/s is thus near perfect scaling but the Strip performance of 2.2 GTris/s shows that the R9 380x (like previous GCN products) suffered from low tessellation performance when triangles were smaller than a pixel.

Evidently... Tessellation is no longer an issue for AMDs new GPUs. All AMD needs now is to add more Tessellation Processors for linear Tessellation scaling performance boosts.

AMDs Tessellation woes were due to the small triangle issue which has been entirely resolved. Had Polaris come with 64 ROPs if likely would have given the GTX 980 Ti a run for its money... and that is at 1266MHz. Polaris has a huge achilles heel as it pertains to pixel fillrate and when using 64-bit textures (half rate performance). There also appears to be a bandwidth related issue with Texture Filtering (likely requiring a newer version of HyperZ in order to boost performance in that respect).
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post #2196 of 3674
Quote:
Originally Posted by PontiacGTX View Post

which reviews?

Pcgamehardware

Pretty sure there was at least one other, not many sites really seemed to look into sustained clock speeds even though AMD introduced a lot of new power/clock features.
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post #2197 of 3674
Curiously the texture fill rate is unchanged over the 380X:


This is odd because the rx 480 has 144 Texture Mapping Units versus 128 on the 380x and of course, it is clocked higher on boost mode. Something is causing a bottleneck on the int 8.


Quote:
Originally Posted by Mahigan View Post

You have 4 Geometry Processors each running at 1266MHz. If you multiply 4x1266MHz you get 5064 or 5.1 Gtris/s. Perfect scaling would deliver that amount of GTris/s and we get 4.7 GTris/s for the List benchmark and surprisingly we get even higher performance for Strip (showing that the Hardware Discard Accelerator is working perfectly). In other words... Tessellation is now on par with Maxwell and Pascal efficiency wise (per Geometry processor).

The R9 380x also had 4 Geometry Processors clocked at 975MHz. If you multiply you get 3900 or 3.9 GTris/s. The list performance of 3.7 GTris/s is thus near perfect scaling but the Strip performance of 2.2 GTris/s shows that the R9 380x (like previous GCN products) suffered from low tessellation performance when triangles were smaller than a pixel.

Evidently... Tessellation is no longer an issue for AMDs new GPUs. All AMD needs now is to add more Tessellation Processors for linear Tessellation scaling performance boosts.

AMDs Tessellation woes were due to the small triangle issue which has been entirely resolved. Had Polaris come with 64 ROPs if likely would have given the GTX 980 Ti a run for its money... and that is at 1266MHz. Polaris has a huge achilles heel as it pertains to pixel fillrate and when using 64-bit textures (half rate performance). There also appears to be a bandwidth related issue with Texture Filtering (likely requiring a newer version of HyperZ in order to boost performance in that respect).


Basically this means that we need 8 Geometry Processors for the 4096 Vega and perhaps 12 for the 6144 part.

Assuming they do this, Gameworks will no longer have much of a performance penalty on AMD GPUs - or at least not any more than Nvidia GPUs.


Would more ROPs resolve the weak point with pixel fill rate? I'd want 128 ROPs on Vega 4096 core and ideally 192 ROPs on the 6144 core variant.

Just wondering if there is anything else that more ROPs would have helped address?



Quote:
Originally Posted by ZealotKi11er View Post

AMD needs to get DX12 and ASync in as many Games/Game Engines as they can.

It will take some time, but it looks like DX12 is getting adopted faster than historically.

There is a huge reason to get this over the GTX 1060, and that is that the typical gamer that buys this GPU is going to have a longer upgrade cycle than enthusiasts. When this GPU becomes replaced, DX12 will be mainstream and the GTX 1060 will have followed the trajectory of Kepler, Maxwell, and now Pascal (after Volta comes out).

They are also working to get GCN shader extensions to Direct3d and Vulkan:
http://gpuopen.com/gcn-shader-extensions-for-direct3d-and-vulkan/

I suspect that if this sees widespread adoption, we will see pretty big performance boosts for AMD for console ports on the PC.


Quote:
Originally Posted by Mahigan View Post

BINGO!

The RX 480 is doing what AMD hoped it would do. Their strategy was not to go head to head with nVIDIA on the highend. Their strategy is entirely focussed on VR (whether that is a good or bad idea is not up to me to decide). The first part of this strategy was LiquidVR and GPU Open followed by the Radeon Pro Duo and now the RX 480. AMD are looking to seed the market with the software solution... the developer hardware as well as a low cost solution in order to takeover the VR market during its onset. Guess what? It is working... and their stock price is in part reflecting the success of this strategy given that Wall St thinks that the VR market (they are betting on it even) will overtake Smartphones in sheer volume by 2020.


I think that we can lose sight that we are the elite when we run around with high end setups. The typical gamer does not spend hundreds a year. They want long term performance. I'll assume whoever is making the business strategy at AMD (actually we should say RTG) knows this.
Edited by CrazyElf - 7/2/16 at 8:22pm
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post #2198 of 3674
Quote:
Originally Posted by BiG StroOnZ View Post

Sapphire RX 480 Nitro is looking pretty slick:

















Sapphire RX 480 Nitro Features:

  • Sapphire Nitro Twin Fan Black Cooler
  • Removable Fans (Makes cleaning easy)
  • 2x HDMI, 2x DisplayPort & 1x DVI (Perfect for VR Setups)
  • Overclocked out the box
  • 1x 8-Pin power connector for improved overclocking ability
  • RGB Sapphire logo with LED Mode switch for different settings (Pick any colour or turn off)
  • Sapphire Nitro backplate for improved cooling and aesthetics
  • Black Diamond Chokes for improved power and eliminate potential of coil whine
  • Nitro Pass through cooling to further improve cooling
  • Dual BIOS

Well... I know what 480 I'll be getting....sorry gigabyte but that card is too gorgeous to pass up, and nitro has a pretty decent track record
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post #2199 of 3674
Getting kind of annoying that no ones doing reviews on the 4GB card.
The only reviews iv been able to find they have only touched on overclocking the vram to 8000mhz like the 8gb which brings it up to the same benchmark scores.
What they are missing is that its pulling 25W less with that overclock. On the core your getting a further 60mhz overclock before getting power limited.
post #2200 of 3674
Quote:
Originally Posted by bmgjet View Post

Getting kind of annoying that no ones doing reviews on the 4GB card.
The only reviews iv been able to find they have only touched on overclocking the vram to 8000mhz like the 8gb which brings it up to the same benchmark scores.
What they are missing is that its pulling 25W less with that overclock. On the core your getting a further 60mhz overclock before getting power limited.

But... but... but...

That would take journalistic integrity. BLASPHEMY!!!!
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