AMD 3D V-Cache RAM Disk Delivers Over 182 GB/s and 175 GB/s Read and Write Speeds

HD64G · Nov 28, 2023

Just a metric of speed without practical use. 3D cache is used where needed and helps much there. Other than that, a fun test this.

THU31 · Nov 28, 2023

And the sad thing is, if you put an Unreal Engine game on there, you'd still get shader compilation and traversal stutters.

TheGuruStud · Nov 29, 2023

Denver said:
Damn... When I read the title, I was shocked and thought, "What product is AMD making now? A new type of SSD? What a bully wanting to succeed in all the areas that intel failed." But it's just a gimmick.

Theoretically, they could make an existing LGA chock full of these and stacked on each other as high as thermals allow (dual socket system). It would be so fast that your dick would fly off.

chrcoluk · Nov 30, 2023

This is very nice but I expect the advantage of cache is latency rather than the bandwidth.

Need a benchmark testing the latency compared to a normal RAM disk and I expect it will be blowing the RAM out of the water.

AnotherReader · Dec 4, 2023

Hardware1906 said:
so, the speed of these L3 cache is just fast as RAM
because right now, with quad channel 6000MHz DDR5, you can already reach 192GB/s

The L3 is vastly faster than DRAM. The figure in the CrystalDiskMark test is the bandwidth available to a single core from the L3. The bandwidth scales with the number of cores. A 7950X gets over 1800 GB/s from L3 with all cores reading from the L3. On the other hand, the 7950X only gets 72.85 GB/s from a 128-bit bus to DDR5-6000. Compare the throughput from a hypothetical 256-bit bus to that L3 result and you'll see why L3 is used. I haven't even touched upon the gap in latency between L3 and DRAM, but that one is even more insurmountable.

A Computer Guy · Dec 4, 2023

AnotherReader said:
The L3 is vastly faster than DRAM. The figure in the CrystalDiskMark test is the bandwidth available to a single core from the L3. The bandwidth scales with the number of cores. A 7950X gets over 1800 GB/s from L3 with all cores reading from the L3. On the other hand, the 7950X only gets 72.85 GB/s from a 128-bit bus to DDR5-6000. Compare the throughput from a hypothetical 256-bit bus to that L3 result and you'll see why L3 is used. I haven't even touched upon the gap in latency between L3 and DRAM, but that one is even more insurmountable.

View attachment 324114

3950x wow. Still a great CPU.

Processor	AMD Ryzen 5 5600@80W
Motherboard	MSI B550 Tomahawk
Cooling	ZALMAN CNPS9X OPTIMA
Memory	2*8GB PATRIOT PVS416G400C9K@3733MT_C16
Video Card(s)	Sapphire Radeon RX 6750 XT Pulse 12GB
Storage	Sandisk SSD 128GB, Kingston A2000 NVMe 1TB, Samsung F1 1TB, WD Black 10TB
Display(s)	AOC 27G2U/BK IPS 144Hz
Case	SHARKOON M25-W 7.1 BLACK
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Power Supply	Seasonic Core GC 500W
Mouse	Sharkoon SHARK Force Black
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Software	Win 7 Ultimate 64bit/Win 10 pro 64bit/Manjaro Linux

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Processor	Intel Core i5-13600KF
Motherboard	ASUS PRIME Z790-P D4
Cooling	SilentiumPC Fortis 3 v2 + Arctic Cooling MX-2
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Video Card(s)	MSI GeForce RTX 4070 Ventus 3X OC 12 GB GDDR6X (2610/21000 @ 0.91 V)
Storage	Lexar NM790 2 TB + Corsair MP510 960 GB + PNY XLR8 CS3030 500 GB + Toshiba E300 3 TB
Display(s)	LG OLED C8 55" + ASUS VP229Q
Case	Fractal Design Define R6
Audio Device(s)	Yamaha RX-V381 + Monitor Audio Bronze 6 + Bronze FX \| FiiO E10K-TC + Sony MDR-7506
Power Supply	Corsair RM650
Mouse	Logitech M705 Marathon
Keyboard	Corsair K55 RGB PRO
Software	Windows 10 Home
Benchmark Scores	Benchmarks in 2024?

Processor	OCed 5800X3D
Motherboard	Asucks C6H
Cooling	Air
Memory	32GB
Video Card(s)	OCed 6800XT
Storage	NVMees
Display(s)	32" Dull curved 1440
Case	Freebie glass idk
Audio Device(s)	Sennheiser
Power Supply	Don't even remember

System Name	Main PC
Processor	13700k
Motherboard	Asrock Z690 Steel Legend D4 - Bios 13.02
Cooling	Noctua NH-D15S
Memory	32 Gig 3200CL14
Video Card(s)	3080 RTX FE 10G
Storage	1TB 980 PRO (OS, games), 2TB SN850X (games), 2TB DC P4600 (work), 2x 3TB WD Red, 2x 4TB WD Red
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Case	Fractal Define R4
Audio Device(s)	Asus Xonar D2X
Power Supply	Antec HCG 750 Gold
Software	Windows 10 21H2 LTSC

Processor	Ryzen 7 5700X
Motherboard	ASUS TUF Gaming X570-PRO (WiFi 6)
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Case	Fractal Design R5
Power Supply	Seasonic PRIME TITANIUM 850W
Mouse	Logitech
VR HMD	Oculus Rift
Software	Windows 11 Pro, and Ubuntu 20.04

System Name	Not a thread ripper but pretty good.
Processor	Ryzen 9 5950x
Motherboard	ASRock X570 Taichi (revision 1.06, BIOS/UEFI version P5.50)
Cooling	EK-Quantum Velocity, EK-Quantum Reflection PC-O11, EK-CoolStream PE 360, XSPC TX360
Memory	Micron DDR4-3200 ECC Unbuffered Memory (4 sticks, 128GB, 18ASF4G72AZ-3G2F1)
Video Card(s)	XFX Radeon RX 5700 & EK-Quantum Vector Radeon RX 5700 +XT & Backplate
Storage	Samsung 2TB 980 PRO 2TB Gen4x4 NVMe, 2 x Samsung 2TB 970 EVO Plus Gen3x4 NVMe, 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)
Power Supply	Corsair RM750x
Mouse	Logitech M575
Keyboard	Corsair Strafe RGB MK.2
Software	Windows 10 Professional (64bit)
Benchmark Scores	Typical for non-overclocked CPU.

AMD 3D V-Cache RAM Disk Delivers Over 182 GB/s and 175 GB/s Read and Write Speeds

HD64G

THU31

TheGuruStud

chrcoluk

AnotherReader

A Computer Guy