AM5 + cheapest DDR5 = ?

Macro Device · Oct 4, 2023

Straight to the point. I got an upcoming AM5 build of MSI MAG B650M MORTAR WIFI with Ryzen 7600X. The point is my client who already ordered the CPU and the mobo is unexpectedly completely tight on money so he can't afford anything better than two cheapest 8 GB modules. He's fine with the fact he won't get sweet timings, optimal latencies etc, his (and mine) only concern is only will it actually work stable. None of the modules are listed as compatible on the vendor's page. And I am completely no expert in Zen 4 IMC behaviour.

Do we need to expect something worse than having to upper the voltage/lower the frequency?

oxrufiioxo · Oct 4, 2023

Poor gaming performance is really the only downside. Ryzen 7000 is more memory sensitive especially with timings than Ryzen 5000 was and even that benefited from Bdie.

TheLostSwede · Oct 4, 2023

Just get whatever with SK Hynix chips and you'll be fine, as it should be quite tweakable.
I have XMP only RAM that is no QVL and it works great with XMP enabled.

ir_cow · Oct 4, 2023

It's basically the same as AM4, but FCLK is not tied to memory now. Keep it in 1:1 ratio. Stick to DDR5 5600-6000 lowest possible timings. If you are going to tweak it yourself, grab a cheap CL40 kit that is using SK Hynix ICs. Easy to get it to CL32-36-36-90 @ 1.4v without much effort.

Belfaborac · Oct 4, 2023

Same here: no EXPO, no QVL, works fine.

Also, so what if performance is slightly impaired initially. Presumably the owner will at some point be able to upgrade the RAM and improve matters. Given the limited cost of a decent 32GB set of DDR5 I'd say that if that remains out of his financial bounds for long, then he's got worse problems than slightly sub-optimal performance in games.

unwind-protect · Oct 4, 2023

Just plug it in. It'll probably work fine even if not on the QVL.

Macro Device · Oct 4, 2023

Belfaborac said:
Presumably the owner will at some point be able to upgrade the RAM and improve matters

Yeah, later this year. He just needs anything to actually run his PC tomorrow evening and he can't make scratch for 32 GB. Gaming is not intended, his only GPUs are a trio of GT 1030s.

ir_cow said:
It's basically the same as AM4

As if I knew how AMD IMCs actually work...

ir_cow said:
Keep it in 1:1 ratio. Stick to DDR5 5600-6000 lowest possible timings.

This is already known to me, Intel shares the same vibe with a little bit higher frequencies.

TheLostSwede said:
as it should be quite tweakable.

Unnecessary. My client doesn't care about RAM speed, his only concern is RAM amount. He doesn't work with anything RAM speed sensitive.

So as far as I gathered, we'll be fine since the only ACTUALLY important thing is making it to the OS and working without crashes, glitches and other unpleasant stuff. Low speed is fine. Thanks guys.

ir_cow · Oct 4, 2023

Beginner Micro Device said:
This is already known to me, Intel shares the same vibe with a little bit higher frequencies.

For DDR4 yes.

Beginner Micro Device said:
necessary. My client doesn't care about RAM speed, his only concern is RAM amount. He doesn't work with anything RAM speed sensitive

Get the cheapest 4800 kit you can find.

Macro Device · Oct 4, 2023

ir_cow said:
Get the cheapest 4800 kit you can find.

That was the original plan. I just wanted to know it doesn't have any flaws besides poor speed.

unwind-protect · Oct 4, 2023

Beginner Micro Device said:
That was the original plan. I just wanted to know it doesn't have any flaws besides poor speed.

All memory needs to be tested anyway.

Belfaborac · Oct 4, 2023

Unless it's actually faulty it'll work just fine. There are no out of the ordinary concerns with AM5 as long as you update to the latest BIOS/Agesa. Prior ones are not great as far as memory compatibility is concerned, although 4800 would have worked on any of them.

ir_cow · Oct 4, 2023

Beginner Micro Device said:
That was the original plan. I just wanted to know it doesn't have any flaws besides poor speed.

Besides the 24GB DIMMs, Micron, Samsung and Hynix work on the base launch BIOS.

Of course updating to the newest BIOS is recommended.

Bill_Bright · Oct 5, 2023

More RAM trumps faster RAM any day of the week - well, at least up to point.

That is, I would MUCH RATHER have 16GB of the slowest RAM than 8GB of the fastest.

When comparing slow 16GB RAM to fast 16GB RAM, the slow RAM will NOT offer "poor" performance. It just will not be as "good" as the fast. And it will still be significantly better than than 8GB.

I do hope, however, his budget allows for a SSD rather than a HD.

Macro Device · Oct 5, 2023

Bill_Bright said:
his budget allows for a SSD rather than a HD.

He already has a truckload of SSDs, not an issue.

Bill_Bright said:
8GB

We didn't even try to consider that. 8 GB is so 2013. He already bought a couple sticks and says it works.

Bill_Bright · Oct 5, 2023

Beginner Micro Device said:
He already bought a couple sticks and says it works.

Great!

System Name	D.L.S.S. (Die Lekker Spoed Situasie)
Processor	i5-12400F
Motherboard	Gigabyte B760M DS3H
Cooling	Laminar RM1
Memory	32 GB DDR4-3200
Video Card(s)	RX 6700 XT (vandalised)
Storage	Yes.
Display(s)	MSi G2712
Case	Matrexx 55 (slightly vandalised)
Audio Device(s)	Yes.
Power Supply	Thermaltake 1000 W
Mouse	Don't disturb, cheese eating in progress...
Keyboard	Makes some noise. Probably onto something.
VR HMD	I live in real reality and don't need a virtual one.
Software	Windows 11 / 10 / 8
Benchmark Scores	My PC can run Crysis. Do I really need more than that?

System Name	His & Hers
Processor	R7 5800X/ R9 7950X3D Stock
Motherboard	X670E Aorus Pro X/ROG Crosshair VIII Hero
Cooling	Corsair h150 elite/ Corsair h115i Platinum
Memory	Trident Z5 Neo 6000/ 32 GB 3200 CL14 @3800 CL16 Team T Force Nighthawk
Video Card(s)	Evga FTW 3 Ultra 3080ti/ Gigabyte Gaming OC 4090
Storage	lots of SSD.
Display(s)	A whole bunch OLED, VA, IPS.....
Case	011 Dynamic XL/ Phanteks Evolv X
Audio Device(s)	Arctis Pro + gaming Dac/ Corsair sp 2500/ Logitech G560/Samsung Q990B
Power Supply	Seasonic Ultra Prime Titanium 1000w/850w
Mouse	Logitech G502 Lightspeed/ Logitech G Pro Hero.
Keyboard	Logitech - G915 LIGHTSPEED / Logitech G Pro

System Name	Overlord Mk MLI
Processor	AMD Ryzen 7 7800X3D
Motherboard	Gigabyte X670E Aorus Master
Cooling	Noctua NH-D15 SE with offsets
Memory	32GB Team T-Create Expert DDR5 6000 MHz @ CL30-34-34-68
Video Card(s)	Gainward GeForce RTX 4080 Phantom GS
Storage	1TB Solidigm P44 Pro, 2 TB Corsair MP600 Pro, 2TB Kingston KC3000
Display(s)	Acer XV272K LVbmiipruzx 4K@160Hz
Case	Fractal Design Torrent Compact
Audio Device(s)	Corsair Virtuoso SE
Power Supply	be quiet! Pure Power 12 M 850 W
Mouse	Logitech G502 Lightspeed
Keyboard	Corsair K70 Max
Software	Windows 10 Pro
Benchmark Scores	https://valid.x86.fr/yfsd9w

Processor	AMD Ryzen 7900X
Motherboard	MSI MPG X670E Carbon WiFi
Cooling	Custom Loop (Watercool/HWLabs)
Memory	G.Skill Trident Z5 DDR5-6000 64GB (F5-6000J3040G32GX2-TZ5K)
Video Card(s)	Gainward RTX 4090 Phantom GS
Storage	7 x M.2, 4 x SSD, 2 x HDD.
Display(s)	Alienware AW3423DW
Case	Corsair 7000D Airflow
Audio Device(s)	Logitech Z207, Shanling UA1 Plus
Power Supply	Corsair HX1200
Mouse	Logitech MX Master
Keyboard	Logitech k360
Software	Windows 11 Pro
Benchmark Scores	None, but I think they'd be fairly decent.

System Name	D.L.S.S. (Die Lekker Spoed Situasie)
Processor	i5-12400F
Motherboard	Gigabyte B760M DS3H
Cooling	Laminar RM1
Memory	32 GB DDR4-3200
Video Card(s)	RX 6700 XT (vandalised)
Storage	Yes.
Display(s)	MSi G2712
Case	Matrexx 55 (slightly vandalised)
Audio Device(s)	Yes.
Power Supply	Thermaltake 1000 W
Mouse	Don't disturb, cheese eating in progress...
Keyboard	Makes some noise. Probably onto something.
VR HMD	I live in real reality and don't need a virtual one.
Software	Windows 11 / 10 / 8
Benchmark Scores	My PC can run Crysis. Do I really need more than that?

System Name	Brightworks Systems BWS-6 E-IV
Processor	Intel Core i5-6600 @ 3.9GHz
Motherboard	Gigabyte GA-Z170-HD3 Rev 1.0
Cooling	Quality Fractal Design Define R4 case, 2 x FD 140mm fans, CM Hyper 212 EVO HSF
Memory	32GB (4 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s)	EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage	Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s)	Samsung S24E650BW LED x 2
Case	Fractal Design Define R4
Power Supply	EVGA Supernova 550W G2 Gold
Mouse	Logitech M190
Keyboard	Microsoft Wireless Comfort 5050
Software	W10 Pro 64-bit

AM5 + cheapest DDR5 = ?

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