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*** AMD "Zen 4" thread (inc AM5/APU discussion) ***

Grim5 said:
DDR4 is dead, even the cheapest ddr5 kits is superior for gaming
Click to expand...
Hyperbole, much? :)

HUB's results were at 1080p with a 3090Ti on mostly medium settings and Steve acknowledged that at 1440p and up the GPU made more difference than the RAM. The real takeaway is that DDR5 that's comparable to DDR4 in performance is now similarly priced so there's no reason to stick with DDR4 if you're building a new computer.
 
Aegis said:
Hyperbole, much? :)

HUB's results were at 1080p with a 3090Ti on mostly medium settings and Steve acknowledged that at 1440p and up the GPU made more difference than the RAM. The real takeaway is that DDR5 that's comparable to DDR4 in performance is now similarly priced so there's no reason to stick with DDR4 if you're building a new computer.
Click to expand...

If this was available earlier there would have been way less ddr4 12th gen builds, that's for sure.
 
One thing to take into account is that this was tested on Intel so we don't even know yet how zen 4 will respond to the cheap modules like the 4800/40 until tested as generally in the past ryzen has been more sensitive than Intel to memory speeds.
 
I wonder if Zen 4's memory controller will allow 1t command rates on DDR5?
Back in the days of Zen 2 + DDR4, it looks like it was possible to gain a couple of frames in games, just by running the command rate at 1t:
www.guru3d.com

AMD Ryzen RAM scaling - performance effect in games (Page 4)

The impact of memory timings and frequency on AMD Ryzen 3000 systems in games has been a topic of discussion. In this artilcle we'll zoom in on specifically that. See, AMD made a change in 3rd gener...
www.guru3d.com www.guru3d.com

It looks like Alder Lake allows a command rate of 1t, but not sure how stable this setting is.
 
Ross Thomson said:
That video is such a crock of ****. people that would buy cheap DDR5 don't have 3090tis and 5800X3D CPUs. Test with more realistic hardware to see if there is a difference. an I3 with a 2060 or 5600XT etc.
Click to expand...

Doesn't that make the point even more relevant, as you'll see no difference at all between a system that has a much lower specification. Showing what a super budget DDR5 kit that cost ~£70, using the best GPU on the market at 1080p will amplify the issue vs the DDR4, or faster DDR5 and as shown it isn't a show stopper, so if you are running an RTX 3060 with a 12400F, you can safely buy a DDR5 B660 board and lose nothing, but add some level of upgradbility for ~£20 more than DDR4 3600.
 
Aegis said:
The real takeaway is that DDR5 that's comparable to DDR4 in performance is now similarly priced so there's no reason to stick with DDR4 if you're building a new computer.
Click to expand...

Pretty much how I feel now, My worry is that DDR5 6000+ will jump back up in price with the release of AMD chips wanting it.
 
House said:
Pretty much how I feel now, My worry is that DDR5 6000+ will jump back up in price with the release of AMD chips wanting it.
Click to expand...
If your set on Zen4 in the next few months then you'd be best off purchasing the memory now as that's almost certainly what will happen.
 
Joxeon said:
If your set on Zen4 in the next few months then you'd be best off purchasing the memory now as that's almost certainly what will happen.
Click to expand...
I'm not set on anything until I see what both red and blue bring to the party :). But your right either way, if i see a good kit at a good price i will bite, (if already got everything but CPU/MOBO/GPU and ram sat there waiting from good deals I've been grabbing over the last 3-4 months).
 
g67575 said:
I wonder if Zen 4's memory controller will allow 1t command rates on DDR5?
Back in the days of Zen 2 + DDR4, it looks like it was possible to gain a couple of frames in games, just by running the command rate at 1t:
www.guru3d.com

AMD Ryzen RAM scaling - performance effect in games (Page 4)

The impact of memory timings and frequency on AMD Ryzen 3000 systems in games has been a topic of discussion. In this artilcle we'll zoom in on specifically that. See, AMD made a change in 3rd gener...
www.guru3d.com www.guru3d.com

It looks like Alder Lake allows a command rate of 1t, but not sure how stable this setting is.
Click to expand...
Ιt is stable on alderlake up until 6400. After that you need to have a really good imc, dont think I've seen anyone run 7000 memory with 1t.
 
House said:
I'm not set on anything until I see what both red and blue bring to the party :). But your right either way, if i see a good kit at a good price i will bite,
Click to expand...

I'd buy when you know what system you are getting, the actual DRAM market is in the doldrums right now prices aren't going up anytime soon, and there is huge oversupply in the channel for DDR5 and DDR4, and a few consumer purchases aren't going to make a dent at all. One of the reasons (other than the general market downturn) is the further delay to Sapphire Rapids, which was supposed to be out now and that platform uses DDR5, so when servers with several TB's of RAM aren't being deployed then it exacerbates the problem even further.

The DRAM market in not expected to see a rebound until then end of Q1 '23, but it could be as late as the start of Q3 '23 before the prices are trending upwards.
 
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