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Auros B550i dual M.2 query

Bouncewasp
By Bouncewasp
in Storage Devices
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Go to solution Solved by Chris Pratt,

The front M.2 runs off the CPU lanes, while the back M.2 runs off the chipset lanes. On B550 boards CPU lanes are PCIe 4.0 and chipset lanes are PCIe 3.0. Either supports NVMe, the difference is only bandwidth, and thus the maximum data transfer rate of the drive. PCIe 4.0 can do 7000MBps, while PCIe 3.0 maxes out at 3500MBps. Just make sure you don't buy a PCIe 4.0 NVMe drive for the back slot. It will still "work", but you'll only get half the advertised speed and they're a lot more expensive.

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Hi all,

Storage is by far the area I know least about when it comes to PCs. I have the ITX Auros B550i and it has a front m.2 slot under heatsink and a rear m.2 slot on the back of the mobo.

 

Snip of the manual attached but I'm confused as to whether this means I can install install nvme or just a sata drive in the second slot? I currently have a WD green sata m.2 in the main slot and I'm wanting to installa 1tb storage drive in the rear slot. If I can, I'd like to buy nvme so I have a better component  in my arsenal, but not sure if it supports this?

Screenshot_20210506-141635_Drive.thumb.jpg.678bc9d05fb7b249a2617710c94ba33b.jpg

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The back slot also supports NVMe, just not PCIe 4.0 like the slot in front.

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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3 minutes ago, Jurrunio said:

The back slot also supports NVMe, just not PCIe 4.0 like the slot in front.

Cool thanks for the reply! So it just runs slightly slower, but otherwise compatible? I guess at some point I will swap it for the front slop but can't be bothered with reinstalling windows just now.

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The front M.2 runs off the CPU lanes, while the back M.2 runs off the chipset lanes. On B550 boards CPU lanes are PCIe 4.0 and chipset lanes are PCIe 3.0. Either supports NVMe, the difference is only bandwidth, and thus the maximum data transfer rate of the drive. PCIe 4.0 can do 7000MBps, while PCIe 3.0 maxes out at 3500MBps. Just make sure you don't buy a PCIe 4.0 NVMe drive for the back slot. It will still "work", but you'll only get half the advertised speed and they're a lot more expensive.

CPU: AMD Ryzen 9 5900X · Cooler: Artic Liquid Freezer II 280 · Motherboard: MSI MEG X570 Unify · RAM: G.skill Ripjaws V 2x16GB 3600MHz CL16 (2Rx8) · Graphics Card: ASUS GeForce RTX 3060 Ti TUF Gaming · Boot Drive: 500GB WD Black SN750 M.2 NVMe SSD · Game Drive: 2TB Crucial MX500 SATA SSD · PSU: Corsair White RM850x 850W 80+ Gold · Case: Corsair 4000D Airflow · Monitor: MSI Optix MAG342CQR 34” UWQHD 3440x1440 144Hz · Keyboard: Corsair K100 RGB Optical-Mechanical Gaming Keyboard (OPX Switch) · Mouse: Corsair Ironclaw RGB Wireless Gaming Mouse

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