G.SKILL Reveals World's First Large Capacity 256 GB (64 GB x4) DDR5 U-DIMM Memory at DDR5-6000 CL32 Overclocked Speed

A Computer Guy · Tuesday at 2:20 AM

Onasi said:
I fail to see the need for 256 gigs of RAM on a consumer desktop platform, but I suppose it’s more of a halo product for GSkill than anything else. Then again, I suppose there ARE weird niche uses for this in SOME workloads paired with a 9950X.

It's good for VM's! 9950x + 256GB ram is awesome possibility but lack of expansion buses on AM5 really kills it.

I'd even be ok with more lane sharing like the following but nevermind board makers doing anything sensible....

x4 (NVMe for CPU)
Slot 1 = x16 (or x8[x4x4] or or x4x4[x8] or x4x4x4x4)
Slot 2 = x4 (or 8 SATA)
Slot 3 = x16 (bifurcation with 1st slot)
Slot 4 = x8 (or 2 NVMe)
Slot 5 = x8 (or 2 NVMe)

I wonder how in practice it will turn out with people being able to run those 4 dimms at that speed. It's got to be a good strain on the IMC.

Also is it crazy to have this much RAM that's not ECC?

Chaitanya · Tuesday at 2:33 AM

lexluthermiester said:
How so? It's GSkill. They're not known for making empty product announcements.

Most motherboard makers added support for those 64GB DIMMs more than a year back and still nothing available for purchase based on those DIMMs. I wont mind upgrading to AM5 if it meant getting 128GB with just 2 DIMM slots occupied.

lexluthermiester · Tuesday at 2:52 AM

Chaitanya said:
Most motherboard makers added support for those 64GB DIMMs more than a year back and still nothing available for purchase based on those DIMMs. I wont mind upgrading to AM5 if it meant getting 128GB with just 2 DIMM slots occupied.

Ok, that's fair. That's history repeating itself. Every new RAM type always gets capacity increases as the platform matures. That's hardly "vaporware" though.

igormp · Tuesday at 3:15 AM

Chaitanya said:
Most motherboard makers added support for those 64GB DIMMs more than a year back and still nothing available for purchase based on those DIMMs. I wont mind upgrading to AM5 if it meant getting 128GB with just 2 DIMM slots occupied.

They took quite a while to finally reach retail, but there are quite some 64GB (C)UDIMMs available already. I can't see how those G Skill ones would not come to market.

I'm personally using a 4x64GB CUDIMM set from Kingston with my 9950x.

Chaitanya · Tuesday at 3:53 AM

lexluthermiester said:
Ok, that's fair. That's history repeating itself. Every new RAM type always gets capacity increases as the platform matures. That's hardly "vaporware" though.

We have seen announcements of "launches" of DIMMs of that capacity for ages and nothing has been available for purchase so far(looked up and Crucial has bottom of barrel DIMMs listed for preorder/backorder so hopefully things will change). So unless these kits really are available for purchase they are vaporware at best.

igormp said:
They took quite a while to finally reach retail, but there are quite some 64GB (C)UDIMMs available already. I can't see how those G Skill ones would not come to market.

I'm personally using a 4x64GB CUDIMM set from Kingston with my 9950x.

What is the SKU number of that said CUDIMM with capacity of 64GB? Kingston's website doesnt seem to list them.

igormp · Tuesday at 4:15 AM

Chaitanya said:
What is the SKU number of that said CUDIMM with capacity of 64GB? Kingston's website doesnt seem to list them.

KVR64A52BD8-64

https://www.kingston.com/datasheets/KVR64A52BD8-64.pdf

Bought mine from provantage as soon as they became available.

I posted a bit about some tests I did in this other thread:

igormp said:
Found my old 650W PSU, decided to give the system a go. Managed to boot it fine with all 4 sticks at 3200MHz.
System would not post whatsoever and instantly shut down at 4800MHz. Tried loading some random timing configs it had for Micron 2x32GB with 1.3V and set it to 4200MHz, it has been stuck in the orange DRAM light for the past 10 minutes
View attachment 390477
View attachment 390478

Chaitanya said:
and nothing has been available for purchase so far(looked up and Crucial has bottom of barrel DIMMs listed for preorder/backorder so hopefully things will change). So unless these kits really are available for purchase they are vaporware at best.

Those Crucial kits have been available on Amazon for quite some time now:

https://www.amazon.com/Crucial-5600MHz-5200MHz-Compatible-CP2K64G56C46U5/dp/B0DSR5P84D?th=1

https://www.amazon.com/Crucial-5600MHz-5200MHz-4800MHz-Compatible/dp/B0DSQWFYPP?th=1

lexluthermiester · Tuesday at 4:27 AM

Chaitanya said:
So unless these kits really are available for purchase they are vaporware at best.

Just because you can't find them doesn't mean they're "vaporware". Come on, you're more knowledgeable than that silliness.

Countryside · Tuesday at 4:29 AM

Finally i will be able to open so many chrome tabs.

TumbleGeorge · Tuesday at 5:04 AM

Chaitanya said:
Most motherboard makers added support for those 64GB DIMMs more than a year back and still nothing available for purchase based on those DIMMs. I wont mind upgrading to AM5 if it meant getting 128GB with just 2 DIMM slots occupied.

AMD support of 256GB RAM with Phoenix mobile that was released on market in April 2023, a month delay that first intentional date. With other words 2 years on market has mainstream consumer APU that theoretically is possible to run so many RAM.

_roman_ · Tuesday at 6:09 AM

Some more memory wasters are:

DRAM is less when you only use the graphic card from the processor, e.g. 7600X
I think I had reserved 8GiB or maybe even 16GiB DRAM to the 7600x for grahics in year 2023 when I was testing the gaming capabilities because i sold the junk MSI radeon 6800 z trio.

HMB - dram less cheap entry m2 nvme will also take up a bit of your dram.

People who use tmpfs filesystem store their files in DRAM. I use tmpfs for many years

--

AM5 is a consumer platform. For professional consumers you have to buy threadripper or amd milan. I highly recommend to get a server mainboard and one of those 7850€ processors. Of course you will need two of those processors, DRAM, Power supply unit, a case and fancy RGB. Kinda affordable but the way to go for more lanes. (AM5 is already too expensive on the mainboard area.)

Visible Noise · Tuesday at 6:37 AM

A&P211 said:
You might not need it but someone else would need it.

Consumer? Nah, don’t believe it.

Professional sure. I have a SQM Data Lake running on Oracle in-memory database server with 1.5 TB of ECC memory. Serves 350 concurrent users with < 2sec application response time.

DirtyDingusMcgee · Tuesday at 7:05 AM

Ram drives and VM's like crazy. Could do some wild memory-cached tiered storage. I can think of ways to use it.

Chaitanya · Tuesday at 7:39 AM

igormp said:
KVR64A52BD8-64

https://www.kingston.com/datasheets/KVR64A52BD8-64.pdf

Bought mine from provantage as soon as they became available.

I posted a bit about some tests I did in this other thread:

Those Crucial kits have been available on Amazon for quite some time now:

https://www.amazon.com/Crucial-5600MHz-5200MHz-Compatible-CP2K64G56C46U5/dp/B0DSR5P84D?th=1

https://www.amazon.com/Crucial-5600MHz-5200MHz-4800MHz-Compatible/dp/B0DSQWFYPP?th=1

Will ask my retailer if they can source those Kingston DIMMs, also Crucial kits arent available for purchase in India.

DTheSleepless · Tuesday at 7:58 AM

Who gives a shit if you really need them or not?

This is an enthusiast website. Half the stuff we buy we don't need.

Scrizz · Tuesday at 8:33 AM

DTheSleepless said:
Who gives a shit if you really need them or not?

This is an enthusiast website. Half the stuff we buy we don't need.

this dude gets it

Jism · Tuesday at 12:39 PM

Onasi said:
I fail to see the need for 256 gigs of RAM on a consumer desktop platform, but I suppose it’s more of a halo product for GSkill than anything else. Then again, I suppose there ARE weird niche uses for this in SOME workloads paired with a 9950X.

Actually, in server space, consumer grade hardware is becoming popular.

Most server CPU's cap out at 2 ~ 3 Ghz while some server applications have simply more benefit with faster cores rather then a zillion of cores.

Lots of threading done on servers is still single threaded; take for example Mysql - large databases benefit a lot better from faster CPU's then 64 or more cores in my opinion.

256GB in a server is very common - you can cache so many things and speed up stuff so hard.

igormp · Tuesday at 4:06 PM

Chaitanya said:
Will ask my retailer if they can source those Kingston DIMMs, also Crucial kits arent available for purchase in India.

Oh, they're not available here in Brazil at all as well (as in, no 64GB model at all), I got mine during a trip to the US.

Ultron1337 · Tuesday at 4:57 PM

Onasi said:
I fail to see the need for 256 gigs of RAM on a consumer desktop platform, but I suppose it’s more of a halo product for GSkill than anything else. Then again, I suppose there ARE weird niche uses for this in SOME workloads paired with a 9950X.

“640K ought to be enough for anybody.”

Jism said:
256GB in a server is very common - you can cache so many things and speed up stuff so hard.

Minimum our EPYC servers come with today is 768GB, 256GB seems distant Xeon era memory.

lexluthermiester · Tuesday at 9:45 PM

Chaitanya said:
Will ask my retailer if they can source those Kingston DIMMs, also Crucial kits arent available for purchase in India.

That's just India. Maybe look elsewhere?

DirtyDingusMcgee · Wednesday at 4:07 AM

I could see it being pretty cool for the 9000G series (or whatever they call the next iteration of) amd desktop apu. I've been seeing lots of these Ryzen ai max +128 gb lpddr5x mini-rigs, so 256 gb with desktop power and thermals sounds like a real step-up from that. Give the igpu 192 gb of frame buffer. lots of possibilities there

System Name	Still not a thread ripper but pretty good.
Processor	Ryzen 9 7950x, Thermal Grizzly AM5 Offset Mounting Kit, Thermal Grizzly Extreme Paste
Motherboard	ASRock B650 LiveMixer (BIOS/UEFI version P3.08, AGESA 1.2.0.2)
Cooling	EK-Quantum Velocity, EK-Quantum Reflection PC-O11, D5 PWM, EK-CoolStream PE 360, XSPC TX360
Memory	Micron DDR5-5600 ECC Unbuffered Memory (2 sticks, 64GB, MTC20C2085S1EC56BD1) + JONSBO NF-1
Video Card(s)	XFX Radeon RX 5700 & EK-Quantum Vector Radeon RX 5700 +XT & Backplate
Storage	Samsung 4TB 980 PRO, 2 x Optane 905p 1.5TB (striped), AMD Radeon RAMDisk
Display(s)	2 x 4K LG 27UL600-W (and HUANUO Dual Monitor Mount)
Case	Lian Li PC-O11 Dynamic Black (original model)
Audio Device(s)	Corsair Commander Pro for Fans, RGB, & Temp Sensors (x4)
Power Supply	Corsair RM750x
Mouse	Logitech M575
Keyboard	Corsair Strafe RGB MK.2
Software	Windows 10 Professional (64bit)
Benchmark Scores	RIP Ryzen 9 5950x, ASRock X570 Taichi (v1.06), 128GB Micron DDR4-3200 ECC UDIMM (18ASF4G72AZ-3G2F1)

Processor	5950x
Motherboard	B550 ProArt
Cooling	Fuma 2
Memory	4x32GB 3200MHz Corsair LPX
Video Card(s)	2x RTX 3090
Display(s)	LG 42" C2 4k OLED
Power Supply	XPG Core Reactor 850W
Software	I use Arch btw

Processor	5950x
Motherboard	B550 ProArt
Cooling	Fuma 2
Memory	4x32GB 3200MHz Corsair LPX
Video Card(s)	2x RTX 3090
Display(s)	LG 42" C2 4k OLED
Power Supply	XPG Core Reactor 850W
Software	I use Arch btw

Processor	11700
Motherboard	TUF z590
Memory	G.Skill 32gb 3600mhz
Video Card(s)	ROG Vega 56
Case	Deepcool
Power Supply	RM 850

System Name	XPS, Lenovo and HP Laptops, HP Xeon Mobile Workstation, HP Servers, Dell Desktops
Processor	Everything from Turion to 13900kf
Motherboard	MSI - they own the OEM market
Cooling	Air on laptops, lots of air on servers, AIO on desktops
Memory	I think one of the laptops is 2GB, to 64GB on gamer, to 128GB on ZFS Filer
Video Card(s)	A pile up to my knee, with a RTX 4090 teetering on top
Storage	Rust in the closet, solid state everywhere else
Display(s)	Laptop crap, LG UltraGear of various vintages
Case	OEM and a 42U rack
Audio Device(s)	Headphones
Power Supply	Whole home UPS w/Generac Standby Generator
Software	ZFS, UniFi Network Application, Entra, AWS IoT Core, Splunk
Benchmark Scores	1.21 GigaBungholioMarks

System Name	Obliterator
Processor	Ryzen 7 7700x PBO
Motherboard	ASRock x670e Steel Legend
Cooling	Noctua NH-D15 G2 LBC
Memory	G.skill Trident Z5 Neo 6000@CL30
Video Card(s)	ASRock rx7900 GRE Steel Legend
Storage	2 x 2TB Samsung 990 pro nmve ssd 2 X 4TB Samsung 870 evo sata ssd 1 X 18TB WD Gold sata hdd
Display(s)	LG 27GN750-B
Case	Fractal Torrent
Audio Device(s)	Klipsch promedia heritage 2.1
Power Supply	FSP Hydro TI 1000w
Mouse	SteelSeries Prime+
Keyboard	Lenovo SK-8825 (L)
Software	Windows 10 Enterprise LTSC 21H2 / Windows 11 Enterprise LTSC 24H2 with multiple flavors of VM

System Name	:)
Processor	Intel 13700k
Motherboard	Gigabyte z790 UD AC
Cooling	Noctua NH-D15
Memory	64GB GSKILL DDR5
Video Card(s)	Gigabyte RTX 4090 Gaming OC
Storage	960GB Optane 905P U.2 SSD + 4TB PCIe4 U.2 SSD
Display(s)	Alienware AW3423DW 175Hz QD-OLED + AOC Agon Pro AG276QZD2 240Hz QD-OLED
Case	Fractal Design Torrent
Audio Device(s)	MOTU M4 - JBL 305P MKII w/2x JL Audio 10 Sealed --- X-Fi Titanium HD - Presonus Eris E5 - JBL 4412
Power Supply	Silverstone 1000W
Mouse	Roccat Kain 122 AIMO
Keyboard	KBD67 Lite / Mammoth75
VR HMD	Reverb G2 V2 / Quest 3
Software	Win 11 Pro

Processor	AMD 5600X
Motherboard	ASUS TUF GAMING B550M-Plus WiFi
Cooling	be quiet! Dark Rock 4
Memory	G.Skill Ripjaws 2 x 32 GB DDR4-3600 CL18-22-22-42 1.35V F4-3600C18D-64GVK
Video Card(s)	Sapphire Pulse RX 7800XT 16GB
Storage	Kingston KC3000 2TB + QNAP TBS-464
Display(s)	LG 35" LCD 35WN75C-B 3440x1440
Case	Kolink Bastion RGB Midi-Tower
Power Supply	Enermax Digifanless 550W
Mouse	Razer Deathadder v2
Benchmark Scores	phi4 - 42.00 tokens/s