Analogix 4k120 bridge chip ready Q1 2019

Well I HOPE this is too late for the Pimax 8k release. But still, this thing might make it onto the 8k-X and into the Pimax 8k retail version: Analogix Introduces ANX7538/39 AR/VR Head-Mounted Display Controllers for Next Generation 4K 120 FPS AR/VR Headsets |

Would likely solve the 80hz issue

Also good news in general, since Q1 2019 sharp is selling their next high res gen panels too, so that should be a nice combo for next gen VR HMD’s


Anyone remember what the bridge chip model pimax is ot using?

The 8KX likely won’t have the 80hz issue since it’s not being scaled, the 5K allegedly is stable at 90Hz. No?

True rhe 8kX wouldn’t likely have an issue with 90hz as it’s using 2 bridge chips instead of 1. 5k is reported to be able to do 90 but uses 1 chip. 2 chip configuration more bandwidth with dual Input.

Hi sjefdeklerk

I seem to recall Pimax having as a policy that the Kickstarter HMD
is the retail product people can buy later on in stores.

If so, the only way for your admirable fantasy of uber cutting edge display tech to work here is for Pimax to delay the entire Kickstarter product release to 2019 and even further stall for time on the retail headset.

In my honest opinion that won’t happen as its not good business sense. Pimax know they only get one shot in history at embarassing HTC/Oculus and that time in history is NOW.

Realistically, a 4K120 Pimax headset would be sold as, essentially, Pimax 8K v2.0 facelift and ‘we’ will never see even a glimpse of it until V1.0 has seen market saturation in its product lifecycle.


I don’t think the bridge chip is the issue. If I recall correctly, it’s the upscaler causing the refresh rate issue. The only thing this would do is allow native 4k to be displayed with one bridge chip at a higher refresh rate. This would require the scaler to either be bypassed or removed completely.


remember no, but after a search in this forum :wink: ANX7530, so in theory it would only require a refitting


According to the Article yeah it looks possible to swap chip depending on implementation.

well in the documentation for this chip it says " with eye resolutions of up to 2K per eye (4K total) at 120 frames per second (FPS)."

So i do not think it can be used with the 8kX as it’s only 2k pr. eye…

2 chips required one for each channel, no commercial chip can drive 4K x 2 @ 90hz

1 Like

ok i see you point as long as the chip can be setup to drive one 4K display instead of 2x 2k displays.
this are not clear from the information in the link.

I’ve always been under the impression that the kickstarter version would be different than the consumer version. @Heliosurge mentioned this several times too:

1 Like

Well the 8kX wouldnt be able to run natively at 90 hz with the current gen bridge chip since this can only do 4k@60, so even if they’d put in 2 bridge chips (one per panel) that still would only be 60 hz. So that’s why this next gen is needed for the 8k-X. So that’s why I think this next gen chip would be perfect, also since I think that the 8k-X release date wont be before Q1 2019.

If one reads carefully the Kickstarter says the KS model will be close to the consumer version. Once we have our headsets changes may come as a result if our feedback. Much as the same thing with the closed m1 beta testing.

With your Article the new chip looks to mainly have increased bandwidth & the current bridge chip might be able to be swapped out as tge Article suggests. Now granted this would likely need to be done by Pimax as an upgrade option with an upgrade fee + shipping.

I say that because we shouldn’t expect a free upgrade to a revision as often Graphics cards, Motherboards etc often release revised versions & we don’t get to upgrade for free.

Same with Gaming consoles often go through minor/major componets changes without offering free upgrades either.

1 Like

Exactly. If it turns out the bridge chip was the bottleneck (I think Pimax never confirmed if it was bridge chip, hardware scaler or something else) then the consumer version might get this new chip and run 90 hz instead of 80 hz.

But like said, this chip really is nice for the 8k-X, so that it can run both panels natively at 4k@90 hz.

1 Like

I recall that some concerned backer (that seems to be a popular breed around here) posed the question, whether the backers would get the same product as the retail version made available to customers directly after the backers have been served. They voiced concerns about receiving a beta version, being the guinea pigs for Pimax for the commercial version goig into retail. In other words, receiving flawed units while the retail customers would get a well-polished product having corrected flaws of the KS version.

Unsurprsingly, Pimax responded to that with the often cited statement, that the backers would receive exactly the same version. At that point in time, and especially with Pimax’ “don’t worry, nothing ever goes wrong” outlooks into the future, I suppose they will have believed it.

In reality, it would be the (almost) worst thing you could wish for. Of course the backers don’t want to be abused as beta testers, advertendly being issued a flawed version just to collect feedback. This process now is being taken care off in the closed beta, as it should be.

So the backers should receive a device, which is ready for prime-time. Which is good enough for retail too. And I expect that the version being offered in retail in the first weeks/months will actually be pretty much identical with the backer version.

However, during the production of the backer units, Pimax will hopefully continue refining their 8K design, and not only to faciliate the release of the eventual 8K(X) but also simply to improve any parts which can be improved. There is still the 90 Hz thing, and then there surely are othr areas where they will get further feedback and think about modifying the 8K for future production runs. I know that the Vive saw a number of iterations too, e.g. to cut weight, etc., yet each of them will be sold as a “Vive” and not treated as two different devices - and generally they do live up to the specs, and that’s what a customer is entitled to demand.

This is how I view it here - the backers should not insist on identical blueprints, but of course we will demand that all substantial specs should be met by our unit too (well, save for said 90 Hz which is unlikely to happen). But if there are smaller refinements ? Cool, show that Pimax are dedicated to further improve what hopefully is an already quite cool product. We should not seek to force them to not improve their product down the road where they can improve it. And that should go for the 8K Mk I even if it happens after 3 months, and not only for a Mk II released one year later.

You can bet Pimax will not lightheartedly modify the production once it’s up and running. And they will surely not want to p*** off the backers with a faulty prototype series while then delivering a shiny & perfect consumer version unit only 2 months later. It’s the backer version which will be reviewed in public and the verdict would be out long before an improved consumer version hits the stores.


Since Pimax touts modular-ability, perhaps Pimax could ship the upgraded bridge-chips to those brave enough to install it themselves.

All that sending stuff back and forth is not an option for some.


That would be really a nice solution, if they would just put the chip in a socket where it can simply be replaced. But again, I don’t think it’s even sure at this point that the bridgechip IS the problem, Pimax never found out I think what exactly caused it. I do think the bridgechip and scaler are the 2 main suspects. Then again, if the scaler was the problem Pimax could easily have found out (just run without scaler to try). So most likely it’s the bridge chip IMHO.

1 Like

With the 5k capable of 90 on a single chip with an overall 4kish input; the 8kX should be able to do 90 with 2 chips if the gpu can push it.

1180 alert. I said it first![quote=“Heliosurge, post:19, topic:6682, full:true”]
With the 5k capable of 90 on a single chip with an overall 4kish input; the 8kX should be able to do 90 with 2 chips if the gpu can push it.