Description

I wanted to see how far I could push a AMD Ryzen 5 2400G in a size, airflow, and power constrained case. This Is the result of 2 weeks of nightly work, multiple hardware RMAs, and so many crashes it's not even funny anymore. Hope you enjoy!

https://imgur.com/gallery/uHwIdMR <<<---BENCHMARK RESULTS HERE https://old.reddit.com/r/sffpc/comments/9lz1fr/backpackable_33l_2400g_powerhouse/ <<<-REDDIT HERE

Through the course of this, I tested 10 benchmarks across 3 cooling setups at stock settings, and then with the GPU overclocked to 1550MHz @ 1.175V. Each benchmark was run 3 times for each setup, then averaged. Whenever a benchmark produced a result that was obviously an outlier it was discarded and the test was run again. Throughout testing, I used HWInfo64 to measure CPU package temperature (tctl/tdie), VRM temperature for the IR35204 VRMs, CPU+SOC Power measured from the motherboard. The testing scenarios were as follows:

  • Stock Wraith Stealth cooler & paste with decorative bezel removed, all "Auto" clock and voltage settings w/ XMP profile
  • Cryorig C7 Cu, Thermal Grizzly Kryonaut paste, Noctua NF-A9x14 fan, all "Auto" clock and voltage settings w/ XMP profile
  • Cryorig C7 Cu, Thermal Grizzly Kryonaut paste, Noctua NF-A12x15 fan, all "Auto" clock and voltage settings w/ XMP profile
  • Cryorig C7 Cu, Thermal Grizzly Kryonaut paste, Noctua NF-A12x15 fan, manual motherboard settings;
    • CPU: 3.6GHz @ 1.275V, MCE enabled, Low LCC
    • GPU: 1550MHz @ 1.175V (GPU and SOC voltages separate), Low LLC
    • RAM: 3200MHz @ 1.35V, 16-18-18-18-36 timings

The benchmarks were a mix of synthetic and game benchmarks, they include: - Batman: Arkham Knight - Cinebench - Crysis - DOTA 2 (Following directions from this post for repeatability) - FFXV Benchmark - 3DMark Fire Strike - Metro: Last Light Redux - Rise of the Tomb Raider - Uniengine Superposition - 3DMark Time Spy

Everything was benchmarked at 1080p with all settings on low defaults and additional settings turned off, with the exception of Time Spy that defaults to 1440p for the official benchmark. My goals for overclocking were to get the GPU as high as possible while keeping VRM temperatures below 100C during sustained load. I was definitely held back by this particular motherboard's VRM heatsink, but I discuss the individual parts below.

In the end, I'm happy with this build after all the irritation and stress it caused trying to troubleshoot problem after problem. Combined with the AOC G2460PF, I can game at 1080p with Freesync from 35-144 FPS, and LFC makes sure low framerates are surprisingly bearable during intense scenes. The end goal is being able to take this computer and bring it in a backpack with me wherever I go, eventually paired up with a GeChic OnLap 1503E or using whatever TV is available in my hotel room. KillAWatt max power consumption is 130W, well within the 150W provided by the 80+ Bronze PSU.

Part Reviews

CPU

Mine was capable of a 1650MHz @ 1.25V GPU overclock, and 3.9 @ 1.3V CPU overclock. I love these new Ryzen APUs and can't wait to see what happens at 7nm!

CPU Cooler

Taking a star off because the stock fan is extremely loud. Replacing it with a Noctua 92mm or 120mm fan does an incredible job of cooling, keeping package temps well below 70C under heavy load.

Motherboard

Pros:

  • NVMe on top of the motherboard (important for cases like InWin Chopin)

  • Good audio even on front panel header

  • Wifi extremely stable and fast

Cons:

  • Stock "Auto" settings for CPU and SOC massively overvolt, generating extra heat and power fluctuations

  • SOC VRM buzzes whenever iGPU is under load, gets louder when overclocked

  • Moderate SOC voltage (1.175) leads to VRM temps in the 90C range, causing power draw to increase

  • Flashing motherboard with Gigabyte @BIOS utility bricked board, requiring replacement

  • 8-pin CPU power socket in an awful location, making it difficult to unplug without pulling out the whole board

Other Thoughts: Note: This review is based on having two of this board, both exhibiting all of the same issues.

If you're planning on using this for a CPU-only build, you'll probably be fine. But I would not suggest putting an APU on this board, especially if you plan on overclocking it, until Gigabyte either revises the board or fixes the voltage control issues with a BIOS update. My 2400G APU pulls over 120W on stock motherboard settings during Cinebench and Blender testing, immediately causing the CPU to throttle even with aftermarket cooling. Core voltage was measured at over 1.4V, which is an insane amount of voltage considering stock voltage is 1.225!!! The GPU/SOC voltages suffered similar problems, with stock settings causing offsets of +.05-.1 volts (which is a lot considering recommended SOC range is 1.05-1.2). With a 150W 80+ PSU, adjusting the GPU clocks at all would cause over-voltage protection to trip on the PSU, causing an immediate shutdown. This is unacceptable and is probably the poorest stock voltage regulation I've seen across multiple AM4 mITX boards from ASrock, Asus and Gigabyte.

VRM cooling is also rather poor. Doing GPU only overclocking, I had to limit myself to 1.2V SOC voltage to keep VRM temps below 100C during extended load. Certainly part of this is due to my case being very small, but I ensured that the VRMs had plenty of intake and exhaust airflow to prevent recirculation. This heat and voltage limitation meant that instead of getting 1650MHz on my GPU (tested on a different board to be stable at 1.25V), I had to come all the way down to 1550MHz @ 1.175 for long-term stability. That's a lot of performance left on the table because of insufficient surface area for VRM cooling.

The last annoyance is more of a pet-peeve, but still worth mentioning. When the GPU is being used, the SOC VRMs create a buzzing noise that changes frequency based on framerate, and volume depending on SOC voltage. It's definitely audible outside of the case with the cover on. The noise is evident everywhere the GPU is used, from the Windows 10 start menu (audible click on every single scroll) to synthetic and gaming benchmarks (Fire Strike combined test produces a slow, loud clicking noise @ 6 FPS, Crysis benchmark produces a constant grinding noise @ 60+ FPS).

Case Fan

The star of this build, this thin 120mm fan keeps all of my components cool with minimal noise. Always a fan of Noctua!

Monitor

The AOC G2460PF is the best budget monitor for an APU or low-end GPU that I was able to find: $200 for a decent TN panel, Freesync from 35-144 FPS, and Low Framerate Compensation keeps things looking nice even on the bad dips.

Comments

  • 12 months ago
  • 2 points

How are you measuring VRM temps? I used HWMonitorPro, and I have good results.

  • 12 months ago
  • 2 points

I used HWInfo64, it was reliable on everything except for VRM voltages. I basically would load the system for an extended time to soak different parts of the PC, then boot into the uefi as fast as I could to see if the temperatures matched up, and they did.

  • 11 months ago
  • 2 points

Your benchmarks are great! Thanks for posting them. I'm interested that the 120mm fan ended up doing better. Conventional wisdom states that since the airflow pattern of a 120mm fan is non-ideal for a heatsink designed for a 90-92mm fan, then it shouldn't perform as well. I suppose the conventional wisdom doesn't account for the 120mm fan being much more powerful than the 90-92mm fan it replaces. Plus, VRM coverage increases with the 120mm. Maybe I'm quoting the conventional wisdom wrong. Currently, with my 7600K, C7 w/ replacement 90mm fan, and small exhaust fans, I'm working to see how far I can push the frequency at stock or with slight undervolting. I noticed my UEFI had deleted my previous profile, so I had to reinput settings from memory and ended up with something that, at first blush, seemed fairly stable. A bit more tweaking is required. I also need to revisit my sister's R3 1200 settings since she's reported heat issues. It's on a previous-gen Gigabyte Gaming mITX B350 board so if its stock voltage tuning is anything like yours, maybe you've given me my answer. Really cool build - I hope to be able to one like it some day.

  • 11 months ago
  • 1 point

If I am wanting to build a pc with the Ryzen 2400g and the Gigabyte b450 Aorus Pro Wifi (Same two as your build) Then what problems will I run into? I see you have a negative review on using an APU with this mobo. I am wanting to put two 4gb-3200 ram sticks on here as well as a 500gb m.2 ssd and a 500W 80+ PSU. I will upgrade and add an rx580 later once i have money to spend. Do you have any tips? This is my first pc build

  • 11 months ago
  • 1 point

So Gigabyte support and other users have stated they didn't have the same problem with SOC VRM buzzing that I did, so I just had back luck. As far as the voltage issues, as long as you go into your BIOS and set them manually, you should be fine.

  • 8 months ago
  • 1 point

Yo Raulnor, how many fan-headers does your mobo have?

  • 8 months ago
  • 1 point

This motherboard has two 4-pin fan headers. Hope this helped!

  • 8 months ago
  • 1 point

It really does Thanks!

[comment deleted]
  • 12 months ago
  • 1 point

I'd considered looking into that, but the 150W PSU actually has plenty of capacity, I'm mostly held back by thermals on the VRM.