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- Nov 2, 2020
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| System Name | Purple Haze | Vacuum Box |
|---|---|
| Processor | AMD Ryzen 7 5800X3D (-30 CO) | Intel® Xeon® E3-1241 v3 |
| Motherboard | MSI B450 Tomahawk Max | Gigabyte GA-Z87X-UD5H |
| Cooling | Dark Rock 4 Pro, Arctic P14 & P12 case fans | 212 Evo & P12 PWM PST x2, Arctic P14 & P12 case fans |
| Memory | 32GB Ballistix (Micron E 19nm) CL16 @3733MHz | 32GB HyperX Beast 2400MHz (XMP) |
| Video Card(s) | AMD 6900XTXH ASRock OC Formula & Phanteks T30x3 | AMD 5700XT Sapphire Nitro+ & Arctic P12x2 |
| Storage | ADATA SX8200 Pro 1TB, Toshiba P300 3TB x2 | Kingston A400 120GB, Fanxiang S500 Pro 256GB |
| Display(s) | Mi 2K Gaming Monitor 27", AOC 24G2U |
| Case | Modded MS Industrial Titan II Pro RGB | Heavily Modded Cooler Master Q500L |
| Audio Device(s) | Audient iD14 MKII, Adam Audio T8Vs, Bloody M550, HiFiMan HE400se, Tascam TM-80 |
| Power Supply | Rosewill Capstone 1000M | Enermax Revolution X't 730W (both with P14 fans) |
| Mouse | Logitech G305, Bloody A91, Amazon basics, Logitech M187 |
| Keyboard | Redragon K530, Bloody B930, Epomaker TH80 SE, BTC 9110 |
| Software | W10 LTSC 21H2 |
It's been probably more than a year since I've contemplated on my idea of building and testing all negative pressure build.
Being in need of a more power hungry platform, it took some time until I've acquired the Gigabyte G1.Assassin 2 mobo, 3930K, NH-D14 and some irrelevant parts in one single purchase. My main rig (R5 3600, 5700XT), as well as my Gigabyte Z87X UD5H with Xeon E3 1241v3 and 1060 6GB were not suitable being a low power parts, and I wouldn't take apart my main rig for the sake of any experiments to be honest.
The Assassin 2 mobo is infamous being a member of the potentially burning Gigabyte X79 trio, along with UD3 and UD5. GB never made a revision of this boards, but tried to "solve" the problem of overheating VRMs by BIOS updates that soft locked the BIOS OC settings, and enforced the automatic voltage drop under heavy load.
Needlessly to say I was very disappointed finding this out after the purchase. Seeing the BIOS OC settings locked, I've put the board away and tried to get another one. After that deal failed, I gave it another chance and figured that even if the BIOS setting don't react to mouse clicking or the return key, it's possible to enter the numeric value and hit return... And so I've OC'ed my 3930K to 4.5GHz at 1.4V and left it there, as 4.6 required much higher voltage.
The CPU and CPU cooler are both lapped:
My poor CM Q500L case have already gone trough one serious modification, this time going even further in effort to block all the possible holes, on a case that is massively perforated from a factory. Sisyphus work.
It's done by cutting the 3 pieces of aluminium ~3mm thick panels, and attaching them to the corresponding top, bottom and front case panels with pop threads.
Before I start to expand the story with a badly done photos, I'd like to point out that the purpose of this build isn't some magical cooling results (in the smallest ATX compatible case), nor an extra performance from a dead horse (3930K), but a bit different cooling philosophy made on a two simple rules: Unfiltered exhaust fans, single fanless filtered intake.
Covered front and top panels for a less dust accumulation when not in use:
Made the stands from an aluminium square profiles with the goal to block the exaust air from directly reaching the intake. The expansion slots covers are taken from the old office PC cases, as the factory ones were perforated as well. You can also see the damage at the upper right corner of the front panel, the case fell off the "spraying hook"... And if it wasn't already reforced with additional panels and pop threads, it would be completely ruined. I've made the back I/O shield out of PVC sheet:
Now the operating mode look:
The intake design testing phase:
The result:
Take note that I've tried to make this out of the factory acrylic panel, but it died a terrible death in the process...
let's take a peek inside:
Tiny fellas with the toughest duty:
Cooling the barrel of a gun... Seriously, screw you Gigabyte. I just hope that whoever was responsible for the design of these heatsinks is already fired. Years ago.
For those who wonder what's the purpose of that F14 at the back of the case:
Dear Lord my phone camera is disgusting... The particles got under the lenses. Anyway, the socket hole was a perfect fit for a 140mm fan. Nice toasty MOSFETs, aren't toasty anymore. Just look how much offset did the GB engineers made for the socket. Unbelievable, and the board is 2cm wider than the "standard" ATX ones. That's also the reason why the gap between the CPU cooler and the PSU is so small.
And the reason why I had to make the fans pull, rather than push hot air from the CPU. The whole project was imagined with another board in mind, the X79 Sabertooth. The PSU still gets enough air, and the fan underneath helps pulling the air from it.
That thing below the Noctua is a 1060 with an inverted shroud:
It's waiting 2 P12s for a true deshroud mod. It's meant to be replaced with a 5700XT from the main rig anyway.
There are other modifications which can't be seen, like the extension of the PSU factory cable (it was too short for this PSU orientation placement - input down, output up), patching the holes, etc.
Here's the HWInfo screenshot. Only the maximum values are relevant (for the temps anyway), and are collected while playing the Warzone 2.0 (DMZ) for about an hour, with an ambient temperature of around 25°C.
Take note that the hottest VRM sensors, the 82 degrees ones, were reaching above 110 without both - the small twins and the 140mm fan, and around 105 without the 140mm fan, while all the others would go over 90 eventually. The GPU is used stock, and all the case fans are at fixed 50% of speed. That makes them run at around 680RPM. I'm fine with their sound, the 45mm ones on the other hand... they are FanControl's teritory. Set at the 20%.
The temps are 10+ degrees higher in the stress tests and synthetics, but that's not the point of this rig anyway. Its main purpose is to serve as a guest gaming PC.
Quality control gave the green light:
All in all I'm satisfied with the results. The concept proved its usefulness and will be utilized in my future builds, including bigger, fully custom enclosures and much better ergonomics and design taste in mind.
Some leftovers:
The rest of the info is in the system specs. Cheers.
Being in need of a more power hungry platform, it took some time until I've acquired the Gigabyte G1.Assassin 2 mobo, 3930K, NH-D14 and some irrelevant parts in one single purchase. My main rig (R5 3600, 5700XT), as well as my Gigabyte Z87X UD5H with Xeon E3 1241v3 and 1060 6GB were not suitable being a low power parts, and I wouldn't take apart my main rig for the sake of any experiments to be honest.
The Assassin 2 mobo is infamous being a member of the potentially burning Gigabyte X79 trio, along with UD3 and UD5. GB never made a revision of this boards, but tried to "solve" the problem of overheating VRMs by BIOS updates that soft locked the BIOS OC settings, and enforced the automatic voltage drop under heavy load.
Needlessly to say I was very disappointed finding this out after the purchase. Seeing the BIOS OC settings locked, I've put the board away and tried to get another one. After that deal failed, I gave it another chance and figured that even if the BIOS setting don't react to mouse clicking or the return key, it's possible to enter the numeric value and hit return... And so I've OC'ed my 3930K to 4.5GHz at 1.4V and left it there, as 4.6 required much higher voltage.
The CPU and CPU cooler are both lapped:
My poor CM Q500L case have already gone trough one serious modification, this time going even further in effort to block all the possible holes, on a case that is massively perforated from a factory. Sisyphus work.
It's done by cutting the 3 pieces of aluminium ~3mm thick panels, and attaching them to the corresponding top, bottom and front case panels with pop threads.
Before I start to expand the story with a badly done photos, I'd like to point out that the purpose of this build isn't some magical cooling results (in the smallest ATX compatible case), nor an extra performance from a dead horse (3930K), but a bit different cooling philosophy made on a two simple rules: Unfiltered exhaust fans, single fanless filtered intake.
Covered front and top panels for a less dust accumulation when not in use:
Made the stands from an aluminium square profiles with the goal to block the exaust air from directly reaching the intake. The expansion slots covers are taken from the old office PC cases, as the factory ones were perforated as well. You can also see the damage at the upper right corner of the front panel, the case fell off the "spraying hook"... And if it wasn't already reforced with additional panels and pop threads, it would be completely ruined. I've made the back I/O shield out of PVC sheet:
Now the operating mode look:
The intake design testing phase:
The result:
Take note that I've tried to make this out of the factory acrylic panel, but it died a terrible death in the process...
let's take a peek inside:
Tiny fellas with the toughest duty:
Cooling the barrel of a gun... Seriously, screw you Gigabyte. I just hope that whoever was responsible for the design of these heatsinks is already fired. Years ago.
For those who wonder what's the purpose of that F14 at the back of the case:
Dear Lord my phone camera is disgusting... The particles got under the lenses. Anyway, the socket hole was a perfect fit for a 140mm fan. Nice toasty MOSFETs, aren't toasty anymore. Just look how much offset did the GB engineers made for the socket. Unbelievable, and the board is 2cm wider than the "standard" ATX ones. That's also the reason why the gap between the CPU cooler and the PSU is so small.
And the reason why I had to make the fans pull, rather than push hot air from the CPU. The whole project was imagined with another board in mind, the X79 Sabertooth. The PSU still gets enough air, and the fan underneath helps pulling the air from it.
That thing below the Noctua is a 1060 with an inverted shroud:
It's waiting 2 P12s for a true deshroud mod. It's meant to be replaced with a 5700XT from the main rig anyway.
There are other modifications which can't be seen, like the extension of the PSU factory cable (it was too short for this PSU orientation placement - input down, output up), patching the holes, etc.
Here's the HWInfo screenshot. Only the maximum values are relevant (for the temps anyway), and are collected while playing the Warzone 2.0 (DMZ) for about an hour, with an ambient temperature of around 25°C.
Take note that the hottest VRM sensors, the 82 degrees ones, were reaching above 110 without both - the small twins and the 140mm fan, and around 105 without the 140mm fan, while all the others would go over 90 eventually. The GPU is used stock, and all the case fans are at fixed 50% of speed. That makes them run at around 680RPM. I'm fine with their sound, the 45mm ones on the other hand... they are FanControl's teritory. Set at the 20%.
The temps are 10+ degrees higher in the stress tests and synthetics, but that's not the point of this rig anyway. Its main purpose is to serve as a guest gaming PC.
Quality control gave the green light:
All in all I'm satisfied with the results. The concept proved its usefulness and will be utilized in my future builds, including bigger, fully custom enclosures and much better ergonomics and design taste in mind.
Some leftovers:
The rest of the info is in the system specs. Cheers.
Last edited:
