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post #1231 of 4133
Quote:
Originally Posted by Roboyto View Post


I can't elaborate on pressure drop, but the VRM cooling is definitely not as good as the EK. 

http://www.overclock.net/t/1605802/official-radeon-rx480-470-460-owners-club/320_20#post_25416201


thanks dude ! your post was REALLY helpfull

In conclusion, I would say that XSPC blade blocks are fine for gaming with 1-2 cards, but not so for Mining as VRM's temps will be about the same as with the stock cooler anyways.
I prefer to invest 50$ more to give the maximum livespan to my setup

+rep thanks again
    
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post #1232 of 4133
Quote:
Originally Posted by Synister View Post

Hi folks, I've got an MSI RX 480 Gaming X. While running the valley benchmark, my GPU at times dips from 100% usage. Why is this? You can see below, a short run of Valley to show an example.

The others that replied to you both used GPU-z to graph GPU usage. Afterburner's graphs are not compatible with GPU-z graphs, so they aren't seeing what you are seeing.

If you want to compare to what they have, you need to use GPU-z and then compare... or they need to run Afterburner.

Like for like, people!
post #1233 of 4133
Warning: Spoiler! (Click to show)
Quote:
Originally Posted by Roboyto View Post


I can't elaborate on pressure drop, but the VRM cooling is definitely not as good as the EK. 

http://www.overclock.net/t/1605802/official-radeon-rx480-470-460-owners-club/320_20#post_25416201

With all stock settings on my reference 8GB I am seeing 67C after 20 minutes of heaven.  Running 1400/2250 with +50% power and max voltage (stock BIOS) peaked at 78C.  This is with a single XSPC EX240 radiator with (2) absolutely silent fans pulling through the radiator that doesn't have a good source of fresh airflow.  Temperatures could likely be better with a more optimal cooling setup...but this is in my HTPC so size/noise were priority as temps are well within operating range.

The question is though, what kind of settings were you planning on running all the cards at?


If you're looking to flash BIOSes and max all the cards out, then the EK blocks are going to be what you want.


If you plan on running stock voltage/power restrictions, or even with an undervolt, then the temperatures for VRMs should be acceptable with the XSPC block.  If you were to add backplates and use some thermal pads to make them passive heatsinks, the temps would definitely get better.  I did this with a R9 290 (which I recently sold), and utilizing the backplate as a heatsink for VRM1 brought it's temperature down to just under the core and on par with VRM2...which is generally unheard of on Hawaii cards. 


I upgraded thermal pads for the VRMs, to Fujipoly Ultra Extreme, this would likely be a mandatory upgrade to ensure they run as cool as possible since you'll be loading the cards for extremely long periods of time.



What settings are you running the card at?  Is there any overclock applied?  Did you increase power limit or voltage?

Please give as much information as possible so we can help you determine what is going on.

Here's what my card looked like after running Valley looped for 15 minutes with my waterblock installed.  I believe there to be dips when scenes change, but I could be wrong.




I also found another 15 min Valley loop screenshot and this one has much fluctuation in GPU usage.  I can't remember what the settings were exactly, but GPU usage in this scenario is much rockier than the one above.  The biggest difference is that this was when i was using the Kraken bracket and an AIO to cool the core, with a homebrew VRM heatsink.  





 In both scenarios I'm fairly certain the card was set to 1400/2250 with max voltage for core and 50% power target, but I am not 100% certain of this.  I may have been experimenting with RAM voltage for this run.  I would have to run the bench again to be certain.

I don't think that the CPU is the problem.  How have people run bigger GPUs than the 480 with FX CPUs then?  I feel there is something else at play here, unless Valley is extremely CPU dependent for good performance.

There can be scenarios where an Intel CPU would perform better from the gaming stand point, but that would most likely be a game that is more reliant on single core performance where Intel obviously mops the floor with an FX CPU.

I was looking, and am currently unable to locate, a great CPU comparison article for gaming purposes.  In most 'modern' (last few years) gaming titles, even an i3 or FX-4xxx CPU can give extremely good performance due to how games are coded to leverage multiple CPU cores/threads.  The bottom line from said comparison was that a majority of the performance in gaming can be had with 4 cores/threads; and after that it is diminishing returns.  I'm not saying there isn't extra performance to be had from bigger/better CPUs, but you would be surprised how well a HyperThreaded i3 or 4 'core' FX chip will play games. 

Quote:
Originally Posted by Hequaqua View Post

I agree...not a bottleneck. It's the benchmark......

Valley can be ran with two cores and score great. It's not that CPU intensive.

Here is a screen shot that I just ran with my GTX970's. You can see the GPU load go up and down. It's the scene changes, and how much rendering is done. This was a loop for about 15 mins.



I don't think you need to be concerned really. Run a few other benchmarks, or jump up the resolution to 1440p and see how your GPU reacts. It should be a little bigger load throughout.

EDIT: Here is my RX470 with Valley and Heaven.....seems to hold the load a bit higher and tighter than my 970's. I was in SLI though.


Quote:
Originally Posted by looncraz View Post

The others that replied to you both used GPU-z to graph GPU usage. Afterburner's graphs are not compatible with GPU-z graphs, so they aren't seeing what you are seeing.

If you want to compare to what they have, you need to use GPU-z and then compare... or they need to run Afterburner.

Like for like, people!

Ok guys, thanks. Looks like nothing for me to worry about.

This was fully stock btw,(well the OC clocks which MSI stipulate; +25Mhz on Memory, and +13Mh on Core). 0% power limit.

Tbh, I had the same with my old HD 7950. The CPU is not even pulling 20% usage, so definitely not a bottleneck in this situation.

I'll stop my worries.
post #1234 of 4133
Okay. I decided to wait to RMA my card until after the 23rd. Amazon had the XFS refereence 8gb rx480 on pre-order for 249.

https://www.amazon.com/gp/product/B01H3P9CKI/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

I pre-ordered it this morning. I applied for the amazon rewards card and got $70 back plus with my prime membership I have free shipping. So $179.99 and I get the card around the 23rd. I'll swap my ek-block onto it and RMA the Sapphire. My 1440p frame rate in Deus Ex Mankind Divided convinced me I need a 2nd card. Also, here's what corruption without memory errors looks like in Deus Ex:




Sorry about doing it as a GIF. Anyway that happened after 1 benchmark run in dx11. At stock settings there is still some corruption here and there but it doesn't look like this. It's closer to what I get in ROTR. The core overclock doesn't seem to matter. It gets worse with a memory OC but it doesn't come with memory errors. I think it's a bad memory controller. At stock settings I'm getting stuttering when I go under 60fps. Other games look a lot smoother at 45 fps. This game looks terrible from a stuttering standpoint. I might have to play it at 1080p until I get both cards in there. By then I'll probably be done with the game. Maybe the stuttering will be better with a WORKING card.
post #1235 of 4133
The error detection and correction code only protects the datapath from the memory chips to the controller. It does not check the contents written to and read from the memory chips, this would require additional storage capacity. The CRC data is created from the data that was read from the memory chip no matter whether it already is corrupted or not.

A document from Micron shortly explains some of this stuff (link, page 13):
Quote:
GDDR5 calculates the CRC checksum for each READ or WRITE burst and returns the
checksum to the controller on the dedicated EDC pin. The controller performs the same
CRC calculation: If both checksums do not match, the controller assumes that there is a
transmission error, and it is designed to repeat the command that has the error.
It only protects the data bus (actual data lines DQ and and bus inversion lines that ensures that there are always more 1s than 0s simultaneously on the bus).
Edited by BromoL - 9/13/16 at 1:12pm
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post #1236 of 4133
Since AMD has a fab in Germany it has to be Samsung's fault. lol. Thanks for the info. +rep.
post #1237 of 4133
If you plan on buying a RX 480 you can get a Battlefield 1 discount code from AMD.
Already saw promotion on some shop sites.

https://www.amdrewards.com/amdrewards/

https://www.amdrewards.com/amdrewards/files/AMDRewards-Battlefield1_terms_and_conditions_v01.pdf
post #1238 of 4133
hey guys

I think I got the black desktop issue.

Here is what I did.

My RX480 is the XFX RX 480 GTR Black Edition

I installed Afterburner to control the fan curve, while at it I set the power target +50% with AB. No other OC tool running.
Everything worked fine.

This morning when I started my computer back up, after windows login, only Afterburner would load on start up, nothing else.
When I clicked the desktop to get a reaction, black screen.
So I hit the power button - "windows is shutting down" screen showed up just fine.
I started back up and after windows login screen I now only get the black screen.

Anyone know whats going on, has it to do with AB and the settings at all or should I investigate into a different direction?

AB and the "OC" settings were the last thing I changed.


edit: Is this the issue?
https://www.reddit.com/r/AMDHelp/comments/3uicph/black_screen_after_boot_in_login_screen_crimson/cxp2ws8

I will try to get into safe mode and disable the OC settings and see if that works.
Edited by Gladi - 9/14/16 at 3:19am
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post #1239 of 4133
Quote:
Originally Posted by Roboyto View Post

I can do it after I get home later tonight.

Any idea if they've fixed their crappy DX12 implementation yet?

Did you not get home yet? :/
post #1240 of 4133
Quote:
Originally Posted by looncraz View Post


The others that replied to you both used GPU-z to graph GPU usage. Afterburner's graphs are not compatible with GPU-z graphs, so they aren't seeing what you are seeing.

If you want to compare to what they have, you need to use GPU-z and then compare... or they need to run Afterburner.

Like for like, people!

 

This doesn't change the fact that his CPU is not a bottleneck for his GPU.  

 

I'm no expert on software that displays statistics for PC component usage, but I would say the margin of error, or difference, between the two programs is probably negligible.  I'm going to try running the bench with both GPU-Z and AB running to see what the differences between the two may, or may not, be.

 

The more important statistic to look at would probably be the score for the benchmark.  If scores are similar between systems with same GPU, running at same/similar settings, with a different CPU, then we know the card is running as it should be.

 

Quote:
Originally Posted by Synister View Post Warning: Spoiler! (Click to show)
 
Ok guys, thanks. Looks like nothing for me to worry about.

This was fully stock btw,(well the OC clocks which MSI stipulate; +25Mhz on Memory, and +13Mh on Core). 0% power limit.

Tbh, I had the same with my old HD 7950. The CPU is not even pulling 20% usage, so definitely not a bottleneck in this situation.

I'll stop my worries.
 

You're welcome.

 

Would you mind running the benchmark to get a score so we can compare.  Please list what settings the card was run at so we can make as close a comparison as possible with GPU settings.

 

It may also be worth trying one run with standard settings, and then another boosting the power target to 50%.  I'm wondering if the AIB cards benefit at all from this like the reference.

 

Quote:
Originally Posted by neptunex View Post


Did you not get home yet? :/

 

Quite sorry, I started doing the benching that evening but didn't get to finish since I started quite late; and have been busy since.  I'm not sure I'll be able to finish it up tonight, but I will have results up for you in the next day or two.

 

It is quite interesting the impact that running AF/AA at maximum settings have on the card compared to reducing them or turning them off entirely.  I will have a nice comparison of numerous different combinations of AF/AA to see how they affect the RX 480 in RotTR :) 

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