Overclock.net › Forums › Graphics Cards › AMD/ATI › Is my new R9 390 bottlenecked by my FX-6100?
New Posts  All Forums:Forum Nav:

Is my new R9 390 bottlenecked by my FX-6100?

post #1 of 9
Thread Starter 
I previously had an FX-6100 CPU and a GTX 560 video card. I recently bought a new R9 390 (MSI) and I have noticed some weird issues with it. I also got a new 1000W 80+ Platinum PSU (EVGA) with the card, so it is not a lack of power at fault.

I have mainly only tested with GTA V (this is the game I play most). With all settings set to 'very high', MSAA off, and 1080p, Vsync off, I am getting around 30-40 FPS driving around the city. This is nowhere near the performance others seem to get with this card. I can run the game at these same settings on my GTX 560 with only a 5-10 FPS drop in performance (that is a 1 GB card)!

My primary suspect is a CPU bottleneck. I know my CPU isn't the best for gaming and AMD single core performance is terrible, but my CPU usage in task manager is hovering around 50-70% in-game, on all cores (no single core is being used substantially more). It never spikes to 100%.

I also noticed something strange - in MSI Afterburner my 390 seems to be downclocking its core clock from 1040 MHz down to 600-700 MHz during the game, and GPU usage keeps oscillating between 0% and 100% (I'd say it spends around as much time on either end). I tried disabling ULPS and PowerPlay and got the clock to stick to 1040 MHz, but the usage percent keeps fluctuating. I have not OC'd the card. I also tried setting the power limit to +50% with no effect. The card is not overheating either, it stays below 70 C while all this is happening.

I have also tested the card on my brother's system, an i7-4790 platform, and it performs exactly how one would expect (60-70 FPS on same settings). Also another curious note: if I increase MSAA to 8X (keeping other settings the same), the utilization jumps to nearly-constant 100%, and FPS stays about the same.

So is this a CPU bottleneck? Any other thoughts? Thanks in advance!


Here are the specs again:
FX 6100 @3.7 GHz (with a liquid cooler)
16 GB DDR3 1600 MHz CL9
MSI R9 390 8G (in a PCIe 2.0 x16 slot)
Zotac GTX 560 1G (in a PCIe 2.0 x4 slot) (kept this card to use my old VGA monitors with, but my main monitor is connected to the 390)
EVGA 1000W Platinum
2 case fans for case airflow
1 SSD + 3 HDDs

Things I have tried:
- disabling ULPS and PowerPlay
- uninstalling nVidia drivers with DDU (and tested with ONLY the 390)
Edited by Rifdhan - 12/19/15 at 10:33am
Main PC
(15 items)
 
  
CPUMotherboardGraphicsGraphics
FX-6100 Gigabyte GA-970A-DS3 MSI R9 390 8G Zotac GTX 560 1G 
RAMHard DriveHard DriveOS
16 GB DDR3 1600 MHz CL9 256 GB SSD 3 HDDs (320 GB, 1TB, 2TB) Windows 10 64-Bit 
MonitorPower
24" 1080p 60 Hz EVGA 1000W 80+ Platinum 
  hide details  
Reply
Main PC
(15 items)
 
  
CPUMotherboardGraphicsGraphics
FX-6100 Gigabyte GA-970A-DS3 MSI R9 390 8G Zotac GTX 560 1G 
RAMHard DriveHard DriveOS
16 GB DDR3 1600 MHz CL9 256 GB SSD 3 HDDs (320 GB, 1TB, 2TB) Windows 10 64-Bit 
MonitorPower
24" 1080p 60 Hz EVGA 1000W 80+ Platinum 
  hide details  
Reply
post #2 of 9
Quote:
Originally Posted by Rifdhan View Post

I previously had an FX-6100 CPU and a GTX 560 video card. I recently bought a new R9 390 (MSI) and I have noticed some weird issues with it. I also got a new 1000W 80+ Platinum PSU (EVGA) with the card, so it is not a lack of power at fault.

I have mainly only tested with GTA V (this is the game I play most). With all settings set to 'very high', MSAA off, and 1080p, Vsync off, I am getting around 30-40 FPS driving around the city. This is nowhere near the performance others seem to get with this card. I can run the game at these same settings on my GTX 560 with only a 5-10 FPS drop in performance (that is a 1 GB card)!

My primary suspect is a CPU bottleneck. I know my CPU isn't the best for gaming and AMD single core performance is terrible, but my CPU usage in task manager is hovering around 50-70% in-game, on all cores (no single core is being used substantially more). It never spikes to 100%.

I also noticed something strange - in MSI Afterburner my 390 seems to be downclocking its core clock from 1040 MHz down to 600-700 MHz during the game, and GPU usage keeps oscillating between 0% and 100% (I'd say it spends around as much time on either end). I tried disabling ULPS and PowerPlay and got the clock to stick to 1040 MHz, but the usage percent keeps fluctuating. I have not OC'd the card. I also tried setting the power limit to +50% with no effect. The card is not overheating either, it stays below 70 C while all this is happening.

I have also tested the card on my brother's system, an i7-4790 platform, and it performs exactly how one would expect (60-70 FPS on same settings). Also another curious note: if I increase MSAA to 8X (keeping other settings the same), the utilization jumps to nearly-constant 100%, and FPS stays about the same.

So is this a CPU bottleneck? Any other thoughts? Thanks in advance!


Here are the specs again:
FX 6100 @3.7 GHz (with a liquid cooler)
16 GB DDR3 1333 MHz
MSI R9 390 8G (in a PCIe 2.0 x16 slot)
Zotac GTX 560 1G (in a PCIe 2.0 x4 slot) (kept this card to use my old VGA monitors with, but my main monitor is connected to the 390)
EVGA 1000W Platinum
2 case fans for case airflow
1 SSD + 3 HDDs

Things I have tried:
- disabling ULPS and PowerPlay
- uninstalling nVidia drivers with DDU (and tested with ONLY the 390)

Try the following....

OC the CPU first of all, whether that's the issue here or not tongue.gif

But seriously, you need to turn the power limit in AB to 50%, and also try rolling back to the last driver before Crimson, as Crimson seems to cause a lot of downclocking issues for people.....
Daddy's Gamer
(15 items)
 
Son's Gamer
(13 items)
 
PROJECT WIFEY
(11 items)
 
CPUMotherboardGraphicsRAM
FX-9590 @ 5GHz Asus 990FX Sabertooth Rev 2.0 MSI Gaming 390X G. Skill Trident X 4x4GB  
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 250GB Seagate Barracuda 1TB SATA 3  LEPA 240AC Windows 10 x64 Pro 
MonitorKeyboardPowerCase
LG 55UB8500 55" 4K 3D TV Logitech MK350 Rosewill HIVE 850 NZXT S340 
MouseMouse PadOther
Logitech G700s Aukey Smooth 36" Gaming Pad Logitech Driving Force GT  
CPUMotherboardGraphicsRAM
AMD Phenom X6 1065T @ 4GHz - 1.45v MSI 970 Gaming XFX DD 7870 Black Edition @ 1200/1500 G. Skill Trident-X 8GB  
Hard DriveOptical DriveCoolingOS
ADATA SP550 240GB SSD Lite On 24x DVD  Corsair H80i Windows 10 
MonitorPowerCase
46" 1080P LED TV Raidmax RX850 Apevia X-Dreamer 3 Pink 
  hide details  
Reply
Daddy's Gamer
(15 items)
 
Son's Gamer
(13 items)
 
PROJECT WIFEY
(11 items)
 
CPUMotherboardGraphicsRAM
FX-9590 @ 5GHz Asus 990FX Sabertooth Rev 2.0 MSI Gaming 390X G. Skill Trident X 4x4GB  
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 250GB Seagate Barracuda 1TB SATA 3  LEPA 240AC Windows 10 x64 Pro 
MonitorKeyboardPowerCase
LG 55UB8500 55" 4K 3D TV Logitech MK350 Rosewill HIVE 850 NZXT S340 
MouseMouse PadOther
Logitech G700s Aukey Smooth 36" Gaming Pad Logitech Driving Force GT  
CPUMotherboardGraphicsRAM
AMD Phenom X6 1065T @ 4GHz - 1.45v MSI 970 Gaming XFX DD 7870 Black Edition @ 1200/1500 G. Skill Trident-X 8GB  
Hard DriveOptical DriveCoolingOS
ADATA SP550 240GB SSD Lite On 24x DVD  Corsair H80i Windows 10 
MonitorPowerCase
46" 1080P LED TV Raidmax RX850 Apevia X-Dreamer 3 Pink 
  hide details  
Reply
post #3 of 9
Thread Starter 
Quote:
Originally Posted by Agent Smith1984 View Post

Try the following....

OC the CPU first of all, whether that's the issue here or not tongue.gif

But seriously, you need to turn the power limit in AB to 50%, and also try rolling back to the last driver before Crimson, as Crimson seems to cause a lot of downclocking issues for people.....


Thanks for your suggestion. I tried overclocking my FX-6100 and got as high as 4.2 GHz @ 1.45 V without compromising stability. The game now runs ~3-5 FPS faster. Does this indicate CPU bottlenecking?

As for power limit, I already set it to +50% as mentioned, and the old drivers did not change the problem.
Main PC
(15 items)
 
  
CPUMotherboardGraphicsGraphics
FX-6100 Gigabyte GA-970A-DS3 MSI R9 390 8G Zotac GTX 560 1G 
RAMHard DriveHard DriveOS
16 GB DDR3 1600 MHz CL9 256 GB SSD 3 HDDs (320 GB, 1TB, 2TB) Windows 10 64-Bit 
MonitorPower
24" 1080p 60 Hz EVGA 1000W 80+ Platinum 
  hide details  
Reply
Main PC
(15 items)
 
  
CPUMotherboardGraphicsGraphics
FX-6100 Gigabyte GA-970A-DS3 MSI R9 390 8G Zotac GTX 560 1G 
RAMHard DriveHard DriveOS
16 GB DDR3 1600 MHz CL9 256 GB SSD 3 HDDs (320 GB, 1TB, 2TB) Windows 10 64-Bit 
MonitorPower
24" 1080p 60 Hz EVGA 1000W 80+ Platinum 
  hide details  
Reply
post #4 of 9
Isn't there something with the new AMD driver that downclock the GPU?
post #5 of 9
It could be your DDR3 clock. If it IS 1333Mhz as it says in your sig. Piledriver FX's should (imho) use 1866 which IS the recommended speed. Can you clock your memory at all??

Thanx.
    
CPUMotherboardGraphicsRAM
AMD RyZen R7 1700 ASUS ROG Strix B350-F Gaming XFX R9 390 16GB Corsairs Vengence DDR4@3200Mhz 
Hard DriveCoolingOSMonitor
Samsung 840EVO 256GB & Seagate 1TB Corsairs H110i GT Windows 10 Pro SONY 40" V3000 1080p HDTV 
KeyboardPowerCaseMouse
Logitech Wireless Corsairs HX750W K62 Dragonlord Logitech Wireless 
Mouse PadAudio
Steelseries Xonar DSX 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD RyZen R7 1700 ASUS ROG Strix B350-F Gaming XFX R9 390 16GB Corsairs Vengence DDR4@3200Mhz 
Hard DriveCoolingOSMonitor
Samsung 840EVO 256GB & Seagate 1TB Corsairs H110i GT Windows 10 Pro SONY 40" V3000 1080p HDTV 
KeyboardPowerCaseMouse
Logitech Wireless Corsairs HX750W K62 Dragonlord Logitech Wireless 
Mouse PadAudio
Steelseries Xonar DSX 
  hide details  
Reply
post #6 of 9
Thread Starter 
Quote:
Originally Posted by zemega View Post

Isn't there something with the new AMD driver that downclock the GPU?

There is but as far as I know this occurs only when the card is drawing too much power or getting too hot, neither of which is the case with mine. It stays under 70 C and setting the power limit to +50% has no effect. It feels more like it isn't getting enough work to do to stay active (my opinion).

Quote:
Originally Posted by Darkstalker420 View Post

It could be your DDR3 clock. If it IS 1333Mhz as it says in your sig. Piledriver FX's should (imho) use 1866 which IS the recommended speed. Can you clock your memory at all??

Thanx.

Sorry, my RAM is at 1600 MHz, updated sig to correct that. The RAM is only rated up to 1600 MHz CL9, it won't go higher without crashing (tried 1866 at CL11 with no luck). It is running in dual-channel if that helps. I have never heard of RAM speed being a bottleneck to be honest, what made you think that is the problem?

EDIT: Noticed your sig says you too have a 390 with an AMD CPU, have you noticed any performance problems? Have you by any chance played GTA V on that system?
Edited by Rifdhan - 12/19/15 at 10:12am
Main PC
(15 items)
 
  
CPUMotherboardGraphicsGraphics
FX-6100 Gigabyte GA-970A-DS3 MSI R9 390 8G Zotac GTX 560 1G 
RAMHard DriveHard DriveOS
16 GB DDR3 1600 MHz CL9 256 GB SSD 3 HDDs (320 GB, 1TB, 2TB) Windows 10 64-Bit 
MonitorPower
24" 1080p 60 Hz EVGA 1000W 80+ Platinum 
  hide details  
Reply
Main PC
(15 items)
 
  
CPUMotherboardGraphicsGraphics
FX-6100 Gigabyte GA-970A-DS3 MSI R9 390 8G Zotac GTX 560 1G 
RAMHard DriveHard DriveOS
16 GB DDR3 1600 MHz CL9 256 GB SSD 3 HDDs (320 GB, 1TB, 2TB) Windows 10 64-Bit 
MonitorPower
24" 1080p 60 Hz EVGA 1000W 80+ Platinum 
  hide details  
Reply
post #7 of 9
GTA5 is pretty thirsty for both single and multicore performance in some situations.

Faster ram helps with both. 1333Mhz is definitely on the slow end of the spectrum. (edit: also Ram usually isn't a hard bottleneck. It usually just helps out a little when cpu limited. like 10%-20% performance difference)

Going for an Intel quad core also helps.

here's a cpu focused test by gamegpu.ru (should be representative of some of the cpu heavier parts of the game, not a grand average of all gameplay the game has to offer.)


Edited by Tivan - 12/19/15 at 10:21am
Cute PC
(15 items)
 
  
CPUMotherboardGraphicsRAM
4930k@4200 Sabertooth x79 R9 290 Tri-X@950/1250 4x4GB@2133CL9 
Hard DriveCoolingOSMonitor
Crucial BX100 Mugen 4 Win7 Benq xl2411z 
MonitorKeyboardPowerCase
NEC EA231WMi QPad-MK50 (reds) Seasonic S12G 750 Define R4  
MouseMouse PadAudio
Deathadder 3.5G BE Razer Goliathus Speed Edition Large Onboard 
  hide details  
Reply
Cute PC
(15 items)
 
  
CPUMotherboardGraphicsRAM
4930k@4200 Sabertooth x79 R9 290 Tri-X@950/1250 4x4GB@2133CL9 
Hard DriveCoolingOSMonitor
Crucial BX100 Mugen 4 Win7 Benq xl2411z 
MonitorKeyboardPowerCase
NEC EA231WMi QPad-MK50 (reds) Seasonic S12G 750 Define R4  
MouseMouse PadAudio
Deathadder 3.5G BE Razer Goliathus Speed Edition Large Onboard 
  hide details  
Reply
post #8 of 9
Thread Starter 
Quote:
Originally Posted by Tivan View Post

GTA5 is pretty thirsty for both single and multicore performance in some situations.

Faster ram helps with both. 1333Mhz is definitely on the slow end of the spectrum. (edit: also Ram usually isn't a hard bottleneck. It usually just helps out a little when cpu limited. like 10%-20% performance difference)

Going for an Intel quad core also helps.

here's a cpu focused test by gamegpu.ru (should be representative of some of the cpu heavier parts of the game, not a grand average of all gameplay the game has to offer.)


My RAM is at 1600 MHz CL9, corrected my sig to match. Is that still unacceptably slow? I saw some benchmarks showing RAM speed didn't change any gaming performance, and that too high MHz with too high CL is not good either. I thought 1600 with CL9 was a good balance.

So this guy is getting 40 FPS with a 980 SLI setup, while I am getting 35-40 FPS with a single 390. So this is perfectly normal for this CPU then? It is in fact a CPU bottleneck and the solution is a better (Intel) CPU?
Main PC
(15 items)
 
  
CPUMotherboardGraphicsGraphics
FX-6100 Gigabyte GA-970A-DS3 MSI R9 390 8G Zotac GTX 560 1G 
RAMHard DriveHard DriveOS
16 GB DDR3 1600 MHz CL9 256 GB SSD 3 HDDs (320 GB, 1TB, 2TB) Windows 10 64-Bit 
MonitorPower
24" 1080p 60 Hz EVGA 1000W 80+ Platinum 
  hide details  
Reply
Main PC
(15 items)
 
  
CPUMotherboardGraphicsGraphics
FX-6100 Gigabyte GA-970A-DS3 MSI R9 390 8G Zotac GTX 560 1G 
RAMHard DriveHard DriveOS
16 GB DDR3 1600 MHz CL9 256 GB SSD 3 HDDs (320 GB, 1TB, 2TB) Windows 10 64-Bit 
MonitorPower
24" 1080p 60 Hz EVGA 1000W 80+ Platinum 
  hide details  
Reply
post #9 of 9
Quote:
Originally Posted by Rifdhan View Post

My RAM is at 1600 MHz CL9, corrected my sig to match. Is that still unacceptably slow? I saw some benchmarks showing RAM speed didn't change any gaming performance, and that too high MHz with too high CL is not good either. I thought 1600 with CL9 was a good balance.

So this guy is getting 40 FPS with a 980 SLI setup, while I am getting 35-40 FPS with a single 390. So this is perfectly normal for this CPU then? It is in fact a CPU bottleneck and the solution is a better (Intel) CPU?

I'd say the RAM is fine, though you might get 10% more fps with significantly faster ram. Seems like a CPU limitation to me for the most part.
Cute PC
(15 items)
 
  
CPUMotherboardGraphicsRAM
4930k@4200 Sabertooth x79 R9 290 Tri-X@950/1250 4x4GB@2133CL9 
Hard DriveCoolingOSMonitor
Crucial BX100 Mugen 4 Win7 Benq xl2411z 
MonitorKeyboardPowerCase
NEC EA231WMi QPad-MK50 (reds) Seasonic S12G 750 Define R4  
MouseMouse PadAudio
Deathadder 3.5G BE Razer Goliathus Speed Edition Large Onboard 
  hide details  
Reply
Cute PC
(15 items)
 
  
CPUMotherboardGraphicsRAM
4930k@4200 Sabertooth x79 R9 290 Tri-X@950/1250 4x4GB@2133CL9 
Hard DriveCoolingOSMonitor
Crucial BX100 Mugen 4 Win7 Benq xl2411z 
MonitorKeyboardPowerCase
NEC EA231WMi QPad-MK50 (reds) Seasonic S12G 750 Define R4  
MouseMouse PadAudio
Deathadder 3.5G BE Razer Goliathus Speed Edition Large Onboard 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › Is my new R9 390 bottlenecked by my FX-6100?