Tech Talk #23 : RTX 4090

Dear all,

The RTX 4090 is now HERE!

|1023xauto

|601x262px

GeForce RTX 4090 Specs:

GPU Engine Specs: NVIDIA CUDA® Cores 16384
Boost Clock (GHz) 2.52
Base Clock (GHz) 2.23
Memory Specs: Standard Memory Config 24 GB GDDR6X
Memory Interface Width 384-bit
Technology Support: Ray Tracing Cores 3rd Generation
Tensor Cores 4th Generation
NVIDIA Architecture Ada Lovelace
NVIDIA DLSS 3
NVIDIA Reflex Yes
NVIDIA Broadcast Yes
PCI Express Gen 4 Yes
Resizable BAR Yes
NVIDIA® GeForce Experience™ Yes
NVIDIA Ansel Yes
NVIDIA FreeStyle Yes
NVIDIA ShadowPlay Yes
NVIDIA Highlights Yes
NVIDIA G-SYNC® Yes
Game Ready Drivers Yes
NVIDIA Studio Drivers Yes
NVIDIA Omniverse Yes
Microsoft DirectX® 12 Ultimate Yes
NVIDIA GPU Boost™ Yes
NVIDIA NVLink™ (SLI-Ready) No
Vulkan RT API, OpenGL 4.6 Yes
NVIDIA Encoder (NVENC) 2x 8th Generation
NVIDIA Decoder (NVDEC) 5th Generation
AV1 Encode Yes
AV1 Decode Yes
CUDA Capability 8.9
VR Ready Yes
Display Support: Maximum Digital Resolution (1) 7680x4320
Standard Display Connectors HDMI(2), 3x DisplayPort(3)
Multi Monitor 4
HDCP 2.3
Card Dimensions: Length 304 mm
Width 137 mm
Slots 3-Slot (61mm)
Thermal and Power Specs: Maximum GPU Temperature (in C) 90
Graphics Card Power (W) 450 W
Minimum System Power (W) (4) 850 W
Supplementary Power Connectors 3x PCIe 8-pin cables (adapter in box) OR

Among them, the enhancement of VR performance is essentially focused with the following:

How much do you believe the 4090 will enhance VR? Is it worthwhile to purchase and use for VR players?

  • Cop
  • Drop
0 voters

If you have encountered any issue with 4090, please kindly contact with our tech specialist!

edit:
A collection of settings for the 8KX and 4090

Regards,
Your Pimax Team

2 Likes

RTX 4090 & VR simracing

1 Like

RTX 4090 in VR for MSFS

3 Likes

I think the release of the 40 series and particularly the 4090 is very important to VR and especially to Pimax.

Even with one of the previously most powerful GPUs available on the market, the 3080 Ti, I have found running games on the 8KX to be a struggle because of how demanding its dual 4K screens are. The display on the 8KX is glorious, but you have to carefully tune and sacrifice to get the most you can overall.

I haven’t been able to get a 4090 yet, but I expect the large performance gains to finally make the GPU not feel underpowered for the 8KX.

Besides improving the frame rate and allowing for higher quality settings, it’s going to have a big effect on making using the 8KX easier. Why? Because it won’t be so important to carefully fiddle with each new game to try to find the absolutely most optimal video settings. More games will work well enough right out of the gate with little to no effort.

The 4090 really enables Pimax’s upcoming VR headsets. The Crystal has the same number of pixels to push as the 8KX, and the 12K has even more. Pimax needs that GPU umph.

I expect it will also have an effect on causing the rest of the VR industry to advance, too. I don’t think the displays on VR headsets have been particularly held back by what pixel density is possible in the displays, but rather how much GPU is available to drive them.

I also think that the needs of VR were a major driver for the increase in TDP we’re seeing in the 40 series. VR creates demand for that brute force!

2 Likes



I also got my Rtx 4090.

the Pimax 8KX runs very well with it!

Unfortunately, my CPU is still a bit too slow (i7 9700k)

I’m getting a new CPU this week (I9 13900k)

so it should work perfectly. I test all games.

the rtx 3090 was sometimes too slow.

4 Likes
5 Likes

=Unfortunately still no DP2.0 :saluting_face:

1 Like

Hopefully 8KX 2076 and Reality series can work on the upcoming AMD RDNA 3 cards. :wink: :wink: :wink:

Emoticon Winking Smiley - Free vector graphic on Pixabay

1 Like

interesting, the results they claim in that vid for msfs + 4090 are about the same as i found.

does this affect the 12k?

Unfortunately the best available hmd the varjo aero isnt working with the rtx 4090 ( for now )

If it works with the crystall , I will sell the aero and get the crystall

Same case with the Pimax XR oled in walking Dead saints and sinners . It stutters when turning the head with the rtx 4090 :frowning:

I’ ve recorded a through the lense Video for you guys :

Here is how you can recreate the issue:

1 Like

@Heliosurge It might be a good idea to make a mega thread for launch 4090 problems with Pimax headsets. Right now, posts about such issues are getting scattered onto other threads where they are not really on topic. This both tends to zonk the topics of those threads and makes important information about launch 4090 issues harder to find because its hidden in not quite relevant threads.

4 Likes

Damn that makes me think it’s a general steamvr/nvidia issue when resolution is too high on 4090. Surely it will then affect other headsets too on such resolution ( and thus not looking good for xtal neither)

2 Likes

This looks like what happens if you turn HAGS on.

It has nothing to do with HAGS.

Something is different about how Ada handles vsync in certain scenarios.

1 Like

Good idea. Can you make the New Topic?

Done. Launch 4090 problems with Pimax 8KX

1 Like