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Ryzen 7 1700 Undervolting Result

post #1 of 4
Thread Starter 
I did a bit of research of undervolting AMD Ryzen 7 1700 CPU for those who interested.
This CPU is already very efficient and from my test, undervolting doesn't make this CPU much more efficient.

What I do is simply lower the Voltage on PState0, PState1, and PState2 by 0.1V. under heavy load, it is still possible to lower the voltage by 0.125V and on idle, the lowest I can get is 0.175V. But I choose to keep it at 0.1V for consistency.

Specs
CPU : AMD Ryzen 7 1700
Motherboard : ASRock AB350 Pro4
RAM : 2x Crucial 8GB DDR4 2666 MHz 16-15-15-36 1T 1.2V
Graphics Card : Galax Geforce GT710
Storage : Samsung SSD 960 EVO 250 GB + Seagate Barracuda 4TB
Cooling : OCZ Vendetta 2
Total Fans : 7 Fans including HSF Fan
PSU : Seasonic P760 (80 Plus Platinum)

Anyway, here are some results of power consumption and temperature test.

IDLE POWER CONSUMPTION
Default : 61 Watts
Undervolted : 56 Watts

IDLE TEMPERATURE
Default : 30 °C
Undervolted : 29.5 °C

LOAD CPU-Z POWER CONSUMPTION
Default : 115 Watts
Undervolted : 110 Watts

LOAD CPU-Z TEMPERATURE
Default : 44.8 °C
Undervolted : 46 °C

LOAD HANDBRAKE POWER CONSUMPTION
Default : 134 Watts
Undervolted : 128 Watts

LOAD HANDBRAKE TEMPERATURE
Default : 47.9 °C
Undervolted : 46.9 °C

Although the power consumption is consistently lower, it is lower by 5 Watts. Temperature also only decrease by 1C.
Performance is virtually similar since I only touch the voltage and not the clock speed.
    
CPUMotherboardGraphicsRAM
AMD Ryzen 7 1700 3.7 GHz ASRock AB350 Pro4 PowerColor Radeon R9 290 4GB GDDR5 2x 8GB Crucial DDR4 2666 MHz 
Hard DriveHard DriveHard DriveCooling
Samsung SSD 960 EVO 250 GB Samsung Spinpoint HD103SJ 1TB Seagate Barracuda ST4000DM001 4TB OCZ Vendetta 2 
OSMonitorKeyboardPower
Windows 10 Professional LG 25UM58-P 2560x1080 60Hz Power Logic Xenon Sabre Seasonic P760 
CaseMouse
D-Vito 911 Cooler Master CMStorm Sentinal Advance II 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD Ryzen 7 1700 3.7 GHz ASRock AB350 Pro4 PowerColor Radeon R9 290 4GB GDDR5 2x 8GB Crucial DDR4 2666 MHz 
Hard DriveHard DriveHard DriveCooling
Samsung SSD 960 EVO 250 GB Samsung Spinpoint HD103SJ 1TB Seagate Barracuda ST4000DM001 4TB OCZ Vendetta 2 
OSMonitorKeyboardPower
Windows 10 Professional LG 25UM58-P 2560x1080 60Hz Power Logic Xenon Sabre Seasonic P760 
CaseMouse
D-Vito 911 Cooler Master CMStorm Sentinal Advance II 
  hide details  
Reply
post #2 of 4

Nice :)

 

I too found Ryzen to be very well adjusted from the factory - you can lower the voltage, but power consumption doesn't decrease a dramatic amount.

 

In my case however, the real surprise was when overclocking. With just 0.025V over default steady state VID (no turbo) I can clock it at a constant 3.82GHz for an overall power consumption increase of 46W -+11W (tolerance of the measurement gear).

   
AGP bencher
(14 items)
 
CPUMotherboardGraphicsRAM
Ryzen R7 1700 Gigabyte GA-AX370-Gaming 5 Sapphire HD 6950 2GiB 2x8GB KFA2 HOF DDR4-3600 
Hard DriveHard DriveHard DriveHard Drive
Crucial MX100 256GB Seagate 600 Series 240GB Seagate 7200.14 2TB Samsung F3 1TB 
CoolingCoolingCoolingCooling
EKWB Supreme HF XSPC Rasa GPU EK XT360 EK 4.0 
OSMonitorMonitorKeyboard
W10 Pro LG IPS235 LG E2250V KUL ES-87 
PowerCaseMouseAudio
SF Leadex II 650W Lian Li PC-A05NB Logitech G9 Xonar DX 
AudioAudio
SMSL SA-S3+Technics CB-250 Sennheiser HD555 
CPUMotherboardRAMHard Drive
AMD A10-5700 Gigabyte F2A75M-HD2 G.SKILL Ares 2133 CL9 Hitachi 5K750 
Hard DriveCoolingOSMonitor
Momentus .7 200GB Noctua NH-L9a Server 2012 R2 Standard AUO B156HW01 
PowerCaseOther
PicoPSU-80-WI-25V AIO Aluminium Handmade TP-Link Archer Something Something Wi-Fi AC 
CPUCPUCPUMotherboard
Core2Duo E6400 Core2Quad Q6600 Pentium Dual Core E5200 AsRock 4COREDUAL-SATA2 R2.0 
GraphicsRAMHard DriveOptical Drive
A dumpload of ancient AGP cards Kingston Value DDR2-667 CL4 2T @CL3 1T Seagate 160GB 7200.10 LG IDE DVD-ROM 
CoolingCoolingOSMonitor
Ghettomade CPU waterblock 49cc 2stroke engine copper radiator WinXP SP2 32bit ProView 17" 
PowerCase
Tacens Radix V 550W Ghetto aluminium bench 
  hide details  
Reply
   
AGP bencher
(14 items)
 
CPUMotherboardGraphicsRAM
Ryzen R7 1700 Gigabyte GA-AX370-Gaming 5 Sapphire HD 6950 2GiB 2x8GB KFA2 HOF DDR4-3600 
Hard DriveHard DriveHard DriveHard Drive
Crucial MX100 256GB Seagate 600 Series 240GB Seagate 7200.14 2TB Samsung F3 1TB 
CoolingCoolingCoolingCooling
EKWB Supreme HF XSPC Rasa GPU EK XT360 EK 4.0 
OSMonitorMonitorKeyboard
W10 Pro LG IPS235 LG E2250V KUL ES-87 
PowerCaseMouseAudio
SF Leadex II 650W Lian Li PC-A05NB Logitech G9 Xonar DX 
AudioAudio
SMSL SA-S3+Technics CB-250 Sennheiser HD555 
CPUMotherboardRAMHard Drive
AMD A10-5700 Gigabyte F2A75M-HD2 G.SKILL Ares 2133 CL9 Hitachi 5K750 
Hard DriveCoolingOSMonitor
Momentus .7 200GB Noctua NH-L9a Server 2012 R2 Standard AUO B156HW01 
PowerCaseOther
PicoPSU-80-WI-25V AIO Aluminium Handmade TP-Link Archer Something Something Wi-Fi AC 
CPUCPUCPUMotherboard
Core2Duo E6400 Core2Quad Q6600 Pentium Dual Core E5200 AsRock 4COREDUAL-SATA2 R2.0 
GraphicsRAMHard DriveOptical Drive
A dumpload of ancient AGP cards Kingston Value DDR2-667 CL4 2T @CL3 1T Seagate 160GB 7200.10 LG IDE DVD-ROM 
CoolingCoolingOSMonitor
Ghettomade CPU waterblock 49cc 2stroke engine copper radiator WinXP SP2 32bit ProView 17" 
PowerCase
Tacens Radix V 550W Ghetto aluminium bench 
  hide details  
Reply
post #3 of 4
Thread Starter 
Mine doesn't seem to like overclock that well. To hit 3.7 GHz, I already need to bump up the voltage by 0.1 V.
I don't feel like going higher because power consumption already increase by significant margin at 3.7 GHz.
The good thing is, even at 3.2 GHz, Ryzen 7 1700 already handle everything I do really fast, especially compared to my older rig which use Core i5-3570K.
    
CPUMotherboardGraphicsRAM
AMD Ryzen 7 1700 3.7 GHz ASRock AB350 Pro4 PowerColor Radeon R9 290 4GB GDDR5 2x 8GB Crucial DDR4 2666 MHz 
Hard DriveHard DriveHard DriveCooling
Samsung SSD 960 EVO 250 GB Samsung Spinpoint HD103SJ 1TB Seagate Barracuda ST4000DM001 4TB OCZ Vendetta 2 
OSMonitorKeyboardPower
Windows 10 Professional LG 25UM58-P 2560x1080 60Hz Power Logic Xenon Sabre Seasonic P760 
CaseMouse
D-Vito 911 Cooler Master CMStorm Sentinal Advance II 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD Ryzen 7 1700 3.7 GHz ASRock AB350 Pro4 PowerColor Radeon R9 290 4GB GDDR5 2x 8GB Crucial DDR4 2666 MHz 
Hard DriveHard DriveHard DriveCooling
Samsung SSD 960 EVO 250 GB Samsung Spinpoint HD103SJ 1TB Seagate Barracuda ST4000DM001 4TB OCZ Vendetta 2 
OSMonitorKeyboardPower
Windows 10 Professional LG 25UM58-P 2560x1080 60Hz Power Logic Xenon Sabre Seasonic P760 
CaseMouse
D-Vito 911 Cooler Master CMStorm Sentinal Advance II 
  hide details  
Reply
post #4 of 4
Why is your Load CPU-Z temperature higher with undervolt? headscratch.gif

Did you switch the two results by any chance?
Workstation stuff
(407 photos)
SpecViewperf 12.0.1
(117 photos)
PGA 1331
(13 items)
 
CPUMotherboardGraphicsRAM
AMD Zen SR7 octocore (Ryzen 7 1700) Overclockable AM4 motherboard X370 To be determined , AMD Vega? 2x8GB DDR4 low-profile or heatsink-less 
Hard DriveHard DriveCoolingCooling
Samsung 950 Pro / 960 Evo / 960 Pro 256GB or 51... Samsung 850 Evo 1TB SSD Storage Black or black+white Twin tower air cooler or s... EK Vardar F2-140 140mm, Phanteks PH-F140SP 140m... 
CoolingOSMonitorPower
Fractal Design Dynamic GP14 (included with case) Win 10 Pro 64 bit 4K monitor with Freesync EVGA Supernova G3/P2 750W or 850W 
Case
Fractal Design Define R5 Blackout edition 
  hide details  
Reply
Workstation stuff
(407 photos)
SpecViewperf 12.0.1
(117 photos)
PGA 1331
(13 items)
 
CPUMotherboardGraphicsRAM
AMD Zen SR7 octocore (Ryzen 7 1700) Overclockable AM4 motherboard X370 To be determined , AMD Vega? 2x8GB DDR4 low-profile or heatsink-less 
Hard DriveHard DriveCoolingCooling
Samsung 950 Pro / 960 Evo / 960 Pro 256GB or 51... Samsung 850 Evo 1TB SSD Storage Black or black+white Twin tower air cooler or s... EK Vardar F2-140 140mm, Phanteks PH-F140SP 140m... 
CoolingOSMonitorPower
Fractal Design Dynamic GP14 (included with case) Win 10 Pro 64 bit 4K monitor with Freesync EVGA Supernova G3/P2 750W or 850W 
Case
Fractal Design Define R5 Blackout edition 
  hide details  
Reply
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