Downloads


FAQ

<
Plan your build around a 65W TDP CPU. This will keep temperatures and noise low. There is no need to buy expansive overclocking motherboards. Invest your saved money in a better GPU.

Visit the product page of the manufacturers website. Compare these values with the A4-SFX "Specification" section.
Yes the A4-SFX was designed to comply the ATX standards, so it will fit.
The optimal cable lengths depend on your motherboard!

Here are some example lengths that will work on many boards:

  • ATX 24pin cable - 160 mm
  • EPS 8pin/2x4pin cable - 240 mm
  • GPU 6+2pin cable - 210 mm
  • SATA 5pin cable - 150 mm


You find our contact E-Mail address in the "About" section.
Select one of the following forum threads:

German
Computerbase
Pc Games Hardware
Hardwareluxx

English
Hardforum
SFF-Forum

Info: Responsibility for the content of external links (to web pages of third parties) lies solely with the operators of the linked pages.


Tutorials

The 20 pin internal Key-A connector ( more info ) is the new standard for connecting USB-C front panel with speeds up to 10Gbit to the motherboard. Currently only some Intel motherboards are equipped with this connector:

  • ASUS ROG Strix Z370-I Gaming
  • ASUS ROG Strix Z390-I Gaming
  • Gigabyte Z390 I Aorus Pro WIFI
  • Supermicro X11SCV-Q
  • Supero Core Gaming C9Z390-CG-IW

If you have a board without a Key-A connector there are two adapter solutions:

While you read this, we are working on the water cooling guide.

If you can’t wait please take a look at the very good "Optimum Tech" How-tos:

120mm AIO

92mm AIO
All modifications are done on your own risk.

Helpful tools:

  • Prime 95 v26.6 (none AVX) – stability test and extreme test for temperature
  • Your favorite games - test for temperature
  • CoreTemp - Monitor CPU power consumption, clocks and temperatures


Setup Long Power Duration Limit - (up to 30°C)
On modern Intel® based motherboards the CPU is allowed to run the max turbo clock on all cores. Therefor the CPU is able to source up to twice as much power. (9900K – stock 95W TDP vs real 210W TDP) If you setup “Long Power Duration Limit” in the UEFI to a value between 65 to 95W, the CPU will still reach the high turbo clock but as designed not on all cores. In games the average performance loss is 2% while the power and thermal advantage is huge.

*TDP = Thermal Designed Power

Undervolt the CPU - (up to 10°C)
Depending on your CPU you can setup an offset value between -0,05V to -0,1V. In combination with “Long Power Duration Limit” you can increase the turbo clock over all cores on Intel® CPUs, because with undervolting you lowered the CPU base power consumption. Keep in mind a high value can affect the stability of the system.

Remove the I/O Shield - (up to 5°C)
Remove the motherboard I/O shield so air can easier exhaust.

Using a fan duct/adapter - (up to 7°C)
If the CPU fan is not close to the side panel it will recycle hot air inside the case (e.g. L9i/L9a). You can buy the “Bitspower Ultimate Fan-Adapter 80/92mm to 120mm” and grind it down with sandpaper until it fits. An easy alternative is to download the 3D print file above and upload it to an online 3D print service.

Delid your CPU - (up to 20°C)
On some Intel® CPUs the DIE is not soldered to the heatspreader instead the manufacturer uses thermal paste. By delidding the CPU and replace the thermal paste with liquid metal you will see a huge temperature drop. Keep in mind this modification is complicated and should be your last option. We do not recommend it.
A fan that is very close to the vent holes of the side panel creates air turbulences. These turbulences can be very noisy. The noise level depends on fan size/count, fan speed, fan blade design and fan distance to the panel.

The easiest way to reduce this issue is using micromesh dust filters. DEMCIFilter offers two custom sets for the A4-SFX. If you like to test this solution temporary, cut the tights of your girlfriend and span it over the fan.

Alternative solutions are, installing thinner fans or reducing the fan speed.
If you like to use a ASRock X99E-ITX or ASRock X299E-ITX inside the A4-SFX you have to use a water cooling solution or a server 1U heatsink. This guide will focus on air cooling for water cooling please read the “A4-SFX Water Cooling Guide”.

You need:

  • Dynatron T318 2011/3 Narrow ILM heatsink (Asrock X99E-ITX)
  • Dynatron R15 2066 Square ILM heatsink (Asrock X299E-ITX)
  • 92x92x15 mm or 120 x 120 x15 mm fan (Noctua A9x14, A12x15 or Scythe Kaze Flex 120 Slim)
  • Thin zip ties

Install the fan with thin zip ties on the heatsink. After that install the heatsink on the motherboard. Please refer to the “ How to improve cooling performance“ guide to optimize your temperatures.

The A4-SFXv4 has four pre-drilled holes on each side for mounting a custom acrylic/glass side panel. This will allow you to create a window panel by yourself.

  • Download the “Window Kit Template” file in the download section.
  • Open the DWG file with your preferred CAD software.
  • Add cutouts/vent holes.
  • Find a local/online acrylic cutting service (internet search engines can help).
  • Many online cutting services offers an online CAD editor and let you preview different color and material options.
  • Don’t forget to order/buy four M3 screws for each side panel.

AMD, Radeon and Ryzen are registered trademark of Advanced Micro Devices. EKL and Alpenföhn are registered trademark of EKL AG. Intel, Intel Core and Xeon are registered trademarks of Intel Corporation. NVIDIA, GeForce, GeForce RTX, GeForce GTX and Quadro is a registered trademark of NVIDIA Corporation. PCI Express is a registered trademark of PCI-SIG Corporation. Brand and product names mentioned are trademarks of their respective owners.

All images and descriptions are for illustrative purposes only. Visual representation of the products may not be perfectly accurate. All specifications are subject to change without notice. Although we endeavor to present the most precise and comprehensive information at the time of publication, a small number of items may contain typography or photography errors

Responsibility for the content of external links (to web pages of third parties) lies solely with the operators of the linked pages.