Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Lol yah there’s the proof alright. Resolution scale is 0.5 of 4K, hence you are running at 1080p. 2080 Ti my ass.
You try seeing the difference, there isn’t one but for a few frames here or there, but against my better judgement I’ll provide more pictures of RDR2 on high in 4K demonstrating again my first stated FPS benchmarks. I wish I were lying so that someone so sure of themselves such as yourself could be justified in their rigid denial of even the possibility of learning something new, but you’re not, lighten up. Maybe being proven wrong a second time will aid you in finding a better attitude.
 
  • Like
Reactions: Azrael9
You try seeing the difference, there isn’t one but for a few frames here or there, but against my better judgement I’ll provide more pictures of RDR2 on high in 4K demonstrating again my first stated FPS benchmarks. I wish I were lying so that someone so sure of themselves such as yourself could be justified in their rigid denial of even the possibility of learning something new, but you’re not, lighten up. Maybe being proven wrong a second time will aid you in finding a better attitude.
So you come on here claiming your 5700 XT is running as fast as a 2080 Ti, post settings that clearly show you are running settings WAY below the settings 2080 Ti's are benchmarked at, then you want to dig that hole even further by claiming we should all try to look for the differences and that YOU aren't the one that's wrong here. Got it.

Everyone here who knows anything about these cards knew you didn't have the right numbers. Claiming the 5700 XT is as fast as a 2080 Ti is like claiming a Toyota goes faster than a Ferrari. These cards have already been benchmarked by people who get paid to do it correctly.
 
5700 XT eGPU half as good as 5300 dGPU in Unigine!
I'm guessing that it's because he was running the eGPU on the iMac monitor as well that really messed up his performance as the signal has to back through the TB3 cable and that really hurts performance even more. When using the eGPU it's best to use it with an external monitor for gaming.

His scores with the eGPU (5700XT) on the iMac: FPS 28.1, Score 709
My scores with my eGPU (5700XT) on my base model 16" MBP to external monitor: FPS 72.3, Score 1821

I matched his settings as well from what he showed in the video. My 16" MBP is only the base model, so it should have similar specs to that iMac (6 core CPUs), although I have 16GB of RAM.
 
  • Like
Reactions: Homy
Both of my KPs happened within the first 3 days. I added nothing to the machine. It was running 10.15.6 out of the box with the stock ram. This is what the 2nd one looked like.

2020-08-16-KP.jpg
 
It was dropped off at Fed Ex this morning. I just ordered the same config from Amazon and it arrives Wednesday. Maybe this one will work out. I hope the one I just returned was a lemon.
 
I'm guessing that it's because he was running the eGPU on the iMac monitor as well that really messed up his performance as the signal has to back through the TB3 cable and that really hurts performance even more. When using the eGPU it's best to use it with an external monitor for gaming.

His scores with the eGPU (5700XT) on the iMac: FPS 28.1, Score 709
My scores with my eGPU (5700XT) on my base model 16" MBP to external monitor: FPS 72.3, Score 1821

I matched his settings as well from what he showed in the video. My 16" MBP is only the base model, so it should have similar specs to that iMac (6 core CPUs), although I have 16GB of RAM.
You're right about that.
 
@Mike halloran. You are just dense for no reason. Did you read any of the threads about ram issues? I had the same issue. It is fixed now though, the apple included SK Hynix ram wont work with the OWC ram at full speed in dual channel And contrary to your suggestion calling them wouldn’t change that. I ordered more OWC ram for my 2020 and I threw in the SK Hynix in my 2019 imac, I must have used your magic touch because guess what it just works. In any case I don’t see this as an argument I see this as you ignoring all the threads and videos showing issues with the 2020 iMacs ram and then saying hey my iMacs work and my clients do to. All I can say to that is, must be nice.
Funny, when I did it right on two of my clients' 2020 iMacs, it worked perfectly. Fortunately, there's a nice writeup here so that I don't have to explain the exact procedure to you — you know, the one that you keep insisting doesn't exist?
https://9to5mac.com/2020/08/09/how-to-upgrade-2020-imac-ram-video-5k-27-inch-128-gb/

Please stop blaming others and me for your unwillingness (or inability) to find the instructions and follow them.
 
Last edited:
Funny, when I did it right on two of my clients' 2020 iMacs, it worked perfectly. Fortunately, there's a nice writeup here so that I don't have to explain the exact procedure to you — you know, the one that you keep insisting doesn't exist?
https://9to5mac.com/2020/08/09/how-to-upgrade-2020-imac-ram-video-5k-27-inch-128-gb/

Please stop blaming others and me for your unwillingness (or inability) to find the instructions and follow them.
I think the issue many of us are having is that we're unable to use both the Apple OEM RAM and an additional pair of 3rd party RAM and still maintain both speed and dual channel. 9to5 is right that adding another pair to the free DIMM and keeping the Apple RAM in the original DIMM results in reduced speed. Moving the Apple RAM to Channel A and the other pair to Channel B (mixing modules of different sizes in the same DIMM), as 9to5 suggests, results in the correct speed, but reduced memory bandwidth. I noticed poorer performance (and Geekbench results) with both of the above configurations than with just a pair of Crucial RAM installed in the same DIMM, or with four identical sticks of Crucial RAM installed.
 
Last edited:
  • Like
Reactions: intagli
I think the issue many of us are having is that we're unable to use both the Apple OEM RAM and an additional pair of 3rd party RAM and still maintain both speed and dual channel. 9to5 is right that adding another pair to the free DIMM and keeping the Apple RAM in the original DIMM results in reduced speed. Moving the Apple RAM to Channel A and the other pair to Channel B (mixing modules of different sizes in the same DIMM), as 9to5 suggests, results in the correct speed, but reduced memory bandwidth. I noticed poorer performance (and Geekbench results) with both of the above configurations than with just a pair of Crucial RAM installed in the same DIMM, or with four identical sticks of Crucial RAM installed.
I've never understood why Apple has so much trouble with third party RAM. Gazillions of computers out there have upgradeable RAM and if the specs meet, they work. What is Apple doing different here?
 
  • Like
Reactions: KrazyKanuck
10-core 5700 XT compared to HP Envy and Surface Studio 2 (only CPU test)


Amazing how PC manufactures still cannot release a proper all-in-one to this day though they are far better than before. i guess there is not much of a market for them. Surface Studio 2 is expensive as heck and it got released with an old Intel CPU. HP Envy on paper was amazing then the achilles heel of HP outfitting it with an underpowered power supply causing issues for the top GPU came to light.
 
  • Like
Reactions: Azrael9 and Homy
Funny, when I did it right on two of my clients' 2020 iMacs, it worked perfectly. Fortunately, there's a nice writeup here so that I don't have to explain the exact procedure to you — you know, the one that you keep insisting doesn't exist?
https://9to5mac.com/2020/08/09/how-to-upgrade-2020-imac-ram-video-5k-27-inch-128-gb/

Please stop blaming others and me for your unwillingness (or inability) to find the instructions and follow them.

You are ignoring the many posts that post my exact issue that mixing the ram with original apple ram did not work for me and many others. Yet again you simply insist its a matter of following instructions and that your Midas touch made it just work for your clients. Again i only have one response to this. COOL.
 
Amazing how PC manufactures still cannot release a proper all-in-one to this day though they are far better than before. i guess there is not much of a market for them. Surface Studio 2 is expensive as heck and it got released with an old Intel CPU. HP Envy on paper was amazing then the achilles heel of HP outfitting it with an underpowered power supply causing issues for the top GPU came to light.

did you keep duel channel AND the 2667. fomr all i ahve sene its either 2667 and not duel channel for some reason or its duel channel downclocked
 
Barefeats made a nice and useful comparison, (a bit unfinished, but still nice and sure they will complete it later) with an iMacPro, iMac 2020 i7 5500Xt and iMac 2020 i9 5700XT.

Can someone comment on "dual-channel mode" for RAM? Am I mean to put the matching pairs in 1-3 and 2-4 or a match in 1-2 and then 2-4?
 
Funny, when I did it right on two of my clients' 2020 iMacs, it worked perfectly. Fortunately, there's a nice writeup here so that I don't have to explain the exact procedure to you — you know, the one that you keep insisting doesn't exist?
https://9to5mac.com/2020/08/09/how-to-upgrade-2020-imac-ram-video-5k-27-inch-128-gb/

Please stop blaming others and me for your unwillingness (or inability) to find the instructions and follow them.

The 9to5 Mac method is flawed for those who want to continue to use their existing Apple supplied RAM.
He rushed to get his YouTube video released for views before doing proper research.
 
If they've got time, I'd like John90976 to run the 5 minute in-built benchmark of Red Dead Redemption 2 which will reveal the true framerate that his iMac runs the game at and also give us a screenshot of his resolution and graphics settings used to run the benchmark.

No doubt this GPU option gives us an amazing GPU option finally. But I can't just take his account, that the TDP limited 5700 XT in the iMac is nearly at the performance level of an RTX 2080 Ti, at face value. One person's subjective experience of how it is performing doesn't make it actually so. That this iMac 5700 XT is somehow defying all logic to beat non-power limited RTX 2070 Supers and nearly equal the RTX 2080 Ti would truly be 'voodoo magic' if the benchmarks show it

The general benches of the 5700XT have it at 50% of the 2080Ti's perf' at 1/3rd of the price.


But here we see the 2080Ti looking very mediocre on 4k content. With the 5700XT right on its heels, yes, in 4k.

The Ti has a slender lead at times. About 25% in the main for what? 3 times the price? The 5700XT on PC or Mac is killer value for performance. And I never thought I'd be saying that about the gpu in an iMac. *(Sits down and takes temperature...)

In Red Dead Redemption? The Ti is about 25% ahead? Both are extremely playing.

The 2080Ti is over priced. Quite a price to pay for a reasonable 4k experience. Buy the XT. And then buy the mid range RDNA2 and you'll probably still be quids in over the very pricey Ti.

Another point on the TI. It's lowest fps is much lower than the XT's. Where XT keeps its performance more 'measured' within the capability of the card.

The 5700XT 'Pro' has 16 gig of RAM. That's another 1st for a 'consumer' iMac gpu. Try buying any PC gpu with 16 gigs of vram.

It can exceed ultra (in Unigine) 1080 and 2440p fps of 100+ and 68 fps+. Yes. In ultra. Benches and posted on here and the benchmark thread.

Given that no mainstream option in pc land can do 4k yet. The 5700XT is a work of wonder in the iMac.

This iMac can game.

Azrael.
 
Last edited:
  • Like
Reactions: John90976
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.