RTX 4090 Owner's thread

Hey @southamptonfc

1500mhz overclock on the memory??? Which Zotac do you have?

 

Of course this will greatly depend on country but my card has dropped about 250€ since I bought it

 

Just the Zotac 4090 OC. I got lucky for once. I got artifacting at +1800mhz so I put it back to a safe 1500

Also, currently testing out 2820mhz @ 975mv

 

Let me know how that goes Bro. Impressive memory clocks! I'm getting better with OCing but I still run into brick walls with my benchmarks. With my hardware I feel they should be higher. I'm trying to figure out what I'm doing wrong. There are testers with slower processors and memory with scores that smoke mine.

https://www.3dmark.com/spy/36642248

https://www.3dmark.com/sw/413713

https://www.3dmark.com/pr/2076130

 

Gigabyte has some white GPUs - new, looks like Vision (but with different name).
The cooling should be very good on those

 

It's luck of the draw. I've seen some report they can't go above +1000, others claiming much higher.

I've had +1500 on the RAM for about a week without issues.

I've now got 2850mhz @ 975mv on the core. Only for 24hrs though so can't say that's stable yet.

What voltage does yours need for that 3ghz?

 

As it should be. Back in the good old normal times, before all Crypto/Covid crazyness, older tech products actually dropped in price, rather than increased.

 

The 1080Ti jumped in price around a month after release, i paid £699 for a founders on release day, its was £799 by the end of the month.

 

Have you got into memory timing tweaking/overclocking? I was shocked at how much improvement I found on my DDR4 system by optimizing timings.

 

Admittingly no. I turn on AI Overclock in my BIOS, set XMP 1 and make sure my ram is showing the highest speeds. Everyone speaks of optimizing the timings but my board shows TONS of settings. I don't understand all of them.

*****EDIT*****

I'm have material that will help me learn about memory timings and all the options of my motherboard. After studying the information I'm going to post results.

 

It is daunting but knowing which ones are most important is half the battle. The image in the 1st post here has that covered: https://www.hardwareluxx.de/communi...nd-anwendungen-amd-update-23-05-2020.1269156/

Even though it's an AMD system and different RAM types (eg Samsung, Micron) have different properties, it is a good starting point. At least for DDR4

 

I prefer oc3d forums and their AMD/Intel DDR4/DDR 5 24/7 stability threads.
Tons of information, tons of screenshots of RAM settings, voltages, SA/IO CCD, VDD etc voltages.

Sometimes easiest way is just find a lad with same memory, same controller(CPU) preferably same motherboard and just copy paste settings from zen timings or ASRock Timing configurator in your bios.
Set it and forget it. Ofc sometimes said CPU controller differs, can be weaker, so u need to fiddle with voltages more.
And tbh AI CPU tuner or whatever is pure garbage most of times. Wouldn't use it

 

Yep, I've done that to see where my settings differ substantially. Gives a good indiciation where there may be potential gains.

 

On the undervolting testing.

I've tested all the games that I currently play. Rock solid so far. I'm almost ready to say that 2850mhz / 975mv is stable.

If it isn't stable, it will surely only need a few mhz drop to be 100% stable. I'm amazed since I previously found that 2850mhz was also the limit at 1v. Seems like my GPU has a bit of a step there. It can run 3000mhz but requires a good bump in vcore.

Very happy with 2850/975. GPU uses 370W max. Same as my 3080ti but twice as fast. Very impressive jump in 1 generation!

 

Spoke way too soon! I got a few crashes in Portal RTX last night so have had to go back to 2850@1v.

 

That remind me, portal RTX is the better stability test than CP2077 huh

 

Yes. Quake II RTX, too.

 

Here you have the same card paired with black... Black & White