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Aug 21 2013
By: positive_emotion I Only Post Everything 1135 posts
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PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

25 replies 428 views Edited Aug 21, 2013
"PlayStation 4 incorporates hUMA [Heterogeneous Uniform Memory Access] from AMD, which apparently gives Sony’s hardware a significant advantage over Xbox One.

According to a German I.T magazine, translated here, it means that the 3D performance of the PS4 is way ahead of Xbox One. The news was sourced from AMD's Senior Product Marketing Manager Marc Diana.

We’re not particularly technical at PSU but we have spotted a guy who seems to know exactly what this means.

Explaining what hUMA means for PS4, DoesUS says:

"On a classical system you have a RAM pool and a VRAM pool that are physically separated. Copying data from one pool to the other creates latency. The GPU is very good ad hiding latency. What it needs most is high bandwidth. The CPU on the other hand is extremely sensitive to latency. The CPU needs extremely low latency to work efficiently. Copying data from the RAM (CPU) to the VRAM (GPU) creates latency, but that's okay for the GPU. Copying data from RAM (CPU) to VRAM (GPU) and back to the RAM (CPU) creates even more latency. It's too much for the CPU. The copying alone takes longer than the computation wich makes this roundtrip highly ineffective.

Xbox360 and older APUs have a unified RAM. This means that the RAM is no longer physically separated, but even though it's the same RAM chips, the system still distinct between memory partition for the different processors. You still need to copy the data between CPU partition and GPU partition, but this will be much more efficient than copying it between physically separated pools. But it's still too much latency for a CPU, GPU, CPU roundtrip.

PS4 will have hUMA wich means that you no longer need a distinction between CPU partition and GPU partition. Both processors can use the same pieces of data at the same time. You don't need to copy stuff and this allows for completely new algorithms that utilize CPU and GPU at the same time. This is interesting since a GPU is very strong, but extremely dumb. A CPU is extremely smart, but very weak. Since you can utilize both processors at the same time for a single task you have a system that is extremely smart and extremely strong at the same time.

It will allow for an extreme boost for many, many algorithms and parts of algorithms. On top of that it will allow for completely new classes of algorithms. This is a game changer.”

We guess the proof will be in the pudding when we actually get to spend time with these consoles, and PlayStation 4 will have the first bite of the cherry when it launches in November."

http://www.psu.com/a020650/PS4-has-huMA-Xbox-One-doesnt-3D-performance-way-better-apparently

Someone please explain this to me
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Uncharted Territory
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Re: PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

Aug 21, 2013

Virtually meaningless for multiplatform titles.  First party games will look great, juat as they did on PS3, but don't expect many game devs to spend extra dollars squeezing out a few more polygons on PS4 compared to Xbox One when most will never notice or care.

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Umbrella Scientist
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Re: PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

Aug 21, 2013

Wats to explain?

 

They saying instead of having to copy data the processors share the same data.

 

What is faster?  Copy then use, or just use?  I say just use.

 

Then they say it can get even worse in the old way when data has to go back and forth several times, meaning several copies of the same data and all the lost time it took to make those copies.

 

 

Bascially PS4 is all gas pedal, no brakes.

Na13-31 wrote:
Finally, the structure of my question is that you would have to disprove every possible outcome to be correct and I would just have to have one that would likely be beneficial. That's statistically in my favor by quite a bit.


some_text
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Umbrella Scientist
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Re: PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

Aug 21, 2013

Salesmunn wrote:

Virtually meaningless for multiplatform titles.  First party games will look great, juat as they did on PS3, but don't expect many game devs to spend extra dollars squeezing out a few more polygons on PS4 compared to Xbox One when most will never notice or care.


This.

 

 

Its why i dont play multiplatform games for the most part, why would I when they play much better on a $2500 pc?  I hate getting an inferior product and thats exactly what multiplatform games are on consoles 99% of the time.

 

Play exclusives, show Sony we still care about them more then COD!!!        We are losing exclusives left and right, whats the point of console gaming anymore!

Na13-31 wrote:
Finally, the structure of my question is that you would have to disprove every possible outcome to be correct and I would just have to have one that would likely be beneficial. That's statistically in my favor by quite a bit.


some_text
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I Only Post Everything
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Re: PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

Aug 21, 2013
I think the 3D stuff is awesome.

Plus we dont know the full details as of yet.
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Last Guardian
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Re: PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

Aug 21, 2013

Salesmunn wrote:

Virtually meaningless for multiplatform titles.  First party games will look great, juat as they did on PS3, but don't expect many game devs to spend extra dollars squeezing out a few more polygons on PS4 compared to Xbox One when most will never notice or care.


ubisoft already stated the ps4 versions of black flag and watchdogs will look better than the xboxone ver...  as it will be able to handle more in terms of graphical effects

>

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Lombax Warrior
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Re: PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

Aug 21, 2013

Not to mention it looks like XB1 also has overheating problems since M$ had to write a program to make the thing power down when it overheats LOL Smiley LOL

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Last Guardian
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Re: PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

Aug 21, 2013

namaradus wrote:

Not to mention it looks like XB1 also has overheating problems since M$ had to write a program to make the thing power down when it overheats LOL Smiley LOL


your assuming that...  for all we know they did that to avoid a rrod like issue that the 360 often suffered

>

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Lombax Warrior
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Re: PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

Aug 21, 2013

Teus wrote:

namaradus wrote:

Not to mention it looks like XB1 also has overheating problems since M$ had to write a program to make the thing power down when it overheats LOL Smiley LOL


your assuming that...  for all we know they did that to avoid a rrod like issue that the 360 often suffered


You could be right but considering M$ track record it's prolly a safe bet it has an overheating problem Smiley Tongue

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Fender Bender
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Re: PS4 has huMA, Xbox One doesn't, 3D performance way better apparently

Aug 21, 2013
This is great news ether way you look at it.
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