AMD Raven Ridge Thermal/Power Analysis: Ryzen CPUs With Vega

AMD Ryzen 5 2400G Review: Zen, Meet Vega went in-depth on the Raven Ridge architecture and explored the flagship processor's performance. Today, we're taking a closer look at the power consumption, clock rates, and temperatures of AMD's Ryzen 5 2400G and Ryzen 3 2200G. We're also pitting the stock thermal solution against our high-end chiller in order to find a temperature-independent power limit for the Ryzen 5 2400G.

It is also interesting that AMD uses heat-conducting paste instead of solder between its Raven Ridge dies and heat spreaders. However, with an average power dissipation of less than 100W, this cost-cutting measure is probably tolerable for everyday operation. Of course, we also ran a series of more demanding workloads to tax both processors. It comes as little surprise that we figured out how to get the 2400G to throttle. We weren't expecting, however, to get its Radeon Vega Graphics engine stuck that way.

We’re using the same hardware for today's testing as what you saw yesterday: AMD's Ryzen 5 2400G and Ryzen 3 2200G, the Gigabyte AB350N Gaming WiFi with two 8GB G.Skill FlareX DDR4-3200 modules, and AMD’s Wraith Stealth cooler (an OEM part from AVC’s massive portfolio sporting an AMD label). Four screws hold the thermal solution in place, giving us a much more secure mounting mechanism than Intel's push-pin system.

In order to establish the limits of AMD's Raven Ridge-based processors, we need to push them as far as they can go. That's where Alphacool's powerful Eiszeit 2000 compression chiller comes into play. We combine it with the Alphacool Eisblock XPX, replacing AMD's Wraith Stealth heat sink. Motherboard components are cooled by 22°C air from a large fan blowing across them.

But before we dig into our findings, let's quickly recap the hardware used to test, the equipment in our lab responsible for our accurate measurements, and some of the software we run to monitor sensors:

Test Equipment & Environment
System
AMD Ryzen 5 2400G ($169.99 On Newegg)
AMD Ryzen 3 2200G ($99.00 On Newegg)
Gigabyte AB350N-Gaming WiFi ($114.99 On Newegg)
G.Skill FlareX DDR4-3200 (2x 8GB) ($249.99 On Newegg)
Crucial MX300 1TB ($189.99 On Amazon)
be quiet! Dark Power Pro 11 850W ($199.00 On -)
Cooling
AMD Stock Cooler
Alphacool Eisblock XPX ($73.99 On Newegg)
Alphacool Eiszeit 2000 Chiller ($1076.29 On Newegg)
Thermal Grizzly Kryonaut ($11.99 On Amazon) (Used when Switching Coolers)
PC Case
Microcool Banchetto 101
MonitorEizo EV3237-BK
Power Consumption MeasurementMotherboard Sensors, HWiNFO64, AIDA64, Custom Software (by Igor Wallossek)

Contact-free DC Measurement at Eight-Pin EPS Connector
Direct Voltage Measurement at Applicable Power Supplies and PSU
1x Rohde & Schwarz HMO 3054, 500 MHz Digital Multi-Channel Oscilloscope with Storage Function
2x Rohde & Schwarz HZO50 Current Probe (1mA - 30A, 100 kHz, DC)
2x Rohde & Schwarz HZ355 (10:1 Probes, 500 MHz)
Thermal Measurement1x Optris PI640 80 Hz Infrared Camera + PI Connect
Real-Time Infrared Monitoring and Recording
Operating System
Windows 10 Pro USB ($199.99 On Amazon) (1709, All Updates)

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  • Combat_Medic
    The prices you chose to use here are bogus - the $99 and $169 MSRP are what they're actually going for.
    0
  • AgentLozen
    Combat_Medic said:

    The prices you chose to use here are bogus - the $99 and $169 MSRP are what they're actually going for.


    The prices from Amazon or NewEgg (or whatever) are usually inaccurate. I think Tom's should provide us with the MSRP and the internet price. That way, if the internet price is malfunctioning and showing a +50% markup, at least we know what it's SUPPOSED to sell for.

    edit: minor fix
    2
  • FormatC
    When I wrote this review, we had only the official MSRP from AMD. The availability in Germany looks ok and the prices in EUR with VAT are lower :)
    0
  • Ninjawithagun
    The prices (provided via direct link to Amazon.com) are now correct. Unfortunately, they are all sold out...lol.
    2
  • Kennyy Evony
    Best solution to put these in would be your stand alone calculators.
    -4
  • JamesSneed
    These seem to be very efficient for the CPU and GPU performance they deliver. Nifty more options for budget PC's.

    I am left wondering if the 14nm process AMD is using, is having issues scaling to higher frequencies as it appears you keep Zen and Vega at lower clocks and they are very efficient.
    0
  • FormatC
    I really like the new power management and it is finally nothing else as efficiency-orientated mobile technology for the desktop.
    0
  • nuclearpowerofattorney
    Maybe the 2400G is so smart and powerful, that when it reaches critical computational capacity, it evolves to become sentient, and thus unruly. Only after it is rebooted, to have the sentience removed, will the system cease its rebellious behavior. (Actually, I don't think this..but it's all I've got).
    1
  • Rookie_MIB
    For the 2400G, bundling the better Wraith Spire could probably avoid the throttling bouncing around by preventing it from hitting the thermal limits under the more taxing loads.

    Eventually though they're going to have to find out what's causing it to get stuck in that loop.
    0
  • 7angrytangerines
    Obviously 2400G wants to protect itself from some poor saps trying to use it for cryptocurrency mining.
    1
  • bennie101
    When was the last generation Intel used solder on there chips? Maybe AMD is following a bad example of a mistake Intel made. Oh well saves money right!
    0
  • FormatC
    This cooler failed only under bad conditions and with a so-called power-virus. I'm sure that the temperatures will not exceed the limits during normal daily utilization.
    2
  • Valantar
    All in all, I'm really impressed with these chips in terms of power draw. Passable Witcher 3 frame rates at <50W? That's crazy impressive!

    Still, for an article titled "thermal/power analysis", I'm a bit disappointed. No power numbers while overclocked, at least for gaming? No full-platform power draw? For an APU like this that's no doubt headed for a bunch of SFF builds, total platform power draw is important (at least for those of us considering PicoPSUs and the like). Sure, this pulls SSD and motherboard power draw into the mix, but that's the whole point! Please give a ballpark number of peak (non-virus) platform power. Does the motherboard+SSD+cooler add 10W? 20? 30?
    0
  • John Freiman
    Well, unless the GPU throttling can be solved by a BIOS or Firmware update, I'm not going to be upgrading my Plex Server with an AMD A10 APU and RX480 any time soon.
    I am so disappointed!!!!!
    0
  • Valantar
    Anonymous said:
    Well, unless the GPU throttling can be solved by a BIOS or Firmware update, I'm not going to be upgrading my Plex Server with an AMD A10 APU and RX480 any time soon.
    I am so disappointed!!!!!


    It would be baffling if this wasn't a patchable bug - a hardware bug this major that wasn't spotted in preliminary hardware testing? Doesn't make sense to me. Probably need a microcode update of some sort, but of course figuring out the source of it might be more of a challenge.

    Still, if you have an RX 480 in the Plex server, any APU would be a downgrade. If you need more CPU power than you APU provides, why not go for a 1200X or 1300?
    0
  • damric
    Perhaps you should test again with a proper motherboard, you know, one with some descent VRMs and sinks. There are some starting around $75. The motherboard used in your test is just pure rubbish, not designed at all for that harsh treatment.
    0
  • gggplaya
    Anonymous said:
    Well, unless the GPU throttling can be solved by a BIOS or Firmware update, I'm not going to be upgrading my Plex Server with an AMD A10 APU and RX480 any time soon.
    I am so disappointed!!!!!


    What's the idle wattage of your plex server, I can't imagine the A10 APU is very good. Also, if you sold your RX480 on ebay right now, the upgrade to a 2200g with a B350 motherboard and 8GB of ram would even out. Depends on how much graphics power you need on your server.

    I use a NAS, but I use Apple TV 4's with the Infuse app, so there's no need for me to transcode. My ARM NAS only uses about 6watts in HDD standby mode.
    0
  • Ninjawithagun
    Interestingly enough, my 1700X (@ stock 3.5Ghz) achieves the exact same temps under full load Prime95 ;-)
    0
  • FormatC
    I delidded it, with interesting findings after comparing the original TM with high-end grease and liquid metal. Stay tuned, it must be translated now.

    0
  • djekna
    i have 120 w PSU external LC power
    Would i be ok to put 2400G and make a RIG ?
    0