has anyone done an actual speed test for this? I have 3 msata drives in raid right now, and am worried I'll lose some speed with placing two on this card.

I actually ran tests today on this card using 2 Samsung 850 EVO mSATA 250GB drives. Utilizing a Dell PowerEdge R710 with 2 x E5620 and 144GB of memory, Windows 2012 R2 Standard (clean install) and CrystalDiskMark 5.1.2 x64, I ran 3 scenarios: 5 files 1GB each Read MB/s x Write MB/s [Windows Server 2012 R2 RAID 1] Seq Q32T1: 790.9 x 424.4 4K Q32T1: 286.2 x 154.2 Seq: 458.8 x 380.4 4K: 20.44 x 45.65 [Vantec Hardware RAID 1] Seq Q32T1: 815.4 x 428.9 4K Q32T1: 319.2 x 271.0 Seq: 695.6 x 407.9 4K: 32.55 x 65.23 [Vantec Hardware RAID 0 - Just for fun] Seq Q32T1: 819.3 x 819.3 4K Q32T1: 335.3 x 341.3 Seq: 742.6 x 750.4 4K: 31.32 x 70.41

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VANTEC 4 Channel, 2 mSATA + 2 SATA 6Gb/s PCIe RAID Card with HyperDuo Model UGT-MST644R

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Model
Brand	VANTEC
Model	UGT-MST644R

Details
External Ports	2 x mSATA 6Gb/s Ports 2 x SATA 6Gb/s Ports (backwards compatible with SATA II/I) PCI Express x2, compatible with PCI Express x4, x8 and x16 slots
Operating Systems Supported	PCI Express x4, x8 or x16 slot Windows® XP/Vista/7/8/8.1

Features
Features	Two 7Pin SATA connectors and two mSATA (mini PCIe) socket on board Mounts two mSATA SSDs and two SATA HDDs/SSDs in PCIe slot Compliant with PCI-Express Specification v2.0 and backward compatible with PCI-Express 1.x Compliant with Serial ATA Specification 3.0 PCI Express x2 interface, and compatible with PCI Express x4, x8 and x16 slots Supports communication speeds of 6.0Gbps, 3.0Gbps, and 1.5Gbps HyperDuo technology to maximum SSD performance Support TRIM to extend SSD durability Hot Plug and Hot Swap on SATA connection Supports Port Multiplier FIS/CBS and Native Command Queuing (NCQ) Support ATA and ATAPI commands Compatible with SATA III/II/I Hard Drives Support RAID function: RAID 0, RAID 1, RAID 10 and HyperDuo

Dimensions & Weight
Dimensions	6.10" x 2.00" x 0.71"

Packaging
Package Contents	1 x 4 Channel, 2 mSATA + 2 SATA 6Gb/s RAID Card with HyperDuo 1 x Driver CD 1 x User Manual 1 x Low Profile Bracket 2 x SATA Cables

Additional Information
First Listed on Newegg	December 17, 2014

VANTEC 4 Channel, 2 mSATA + 2 SATA 6Gb/s PCIe RAID Card with HyperDuo Model UGT-MST644R

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Item#: N82E16816113003

VANTEC 4 Channel, 2 mSATA + 2 SATA 6Gb/s PCIe RAID Card with HyperDuo Model UGT-MST644R

Learn more about the Vantec UGT-MST644R

Customer Reviews of the Vantec UGT-MST644R

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info