This was an older SSD and I don’t know what it’s max throughput was. Thus, results aren’t likely to be the absolute peak, nor are they likely to be the absolute bottom. I monitored the speeds using “nmon” and took random screenshots during each test. This is essentially a sequential read test without any real filesystem overhead. To get a rough throughput test, I used “dd” to read from the drives and spit the output to /dev/null. If it is plugged into PCI-E1.0, the speed only runs 200-300m/s”, and also went on to mention that if ports are used at the same time the speed will slow down. One AliExpress seller suggested that “The fastest speed is 380-450m/s in PCI-E 2.0. Throughput performance/benchmarking (basic) I saw a 2-3W increase with the card installed. No hard drives, just startup into the BIOS. I tested system consumption from the wall with and without the card installed. In other places I’d seen the Marvel 9215 listed as being in the 2W region and was hoping the port multiplier wouldn’t balloon that figure. The heatsink is well-sized and I don’t foresee any temperature issues.Īs this was intended for a system that runs 24/7, I was curious as to the operating cost. The good news is that the max temperature I saw during my test runs was about 37C. The bad news is that you can’t replace the pad with thermal paste: other chips would short against the heatsink if the pad were removed. If you check out the dismounted heatsink above, you’ll see a thermal pad. Yep! On the left the JMicron JMB575 and on the right the Marvell 88SE9215. My suspicion was that the Marvell 9215 was being used as the main HBA and that the “JMB5xx” was going to be the JMicron JMB575 port multiplier. The first thing I did was pull the heatsink to get a look at the chips. Incidentally, the 8 little LEDs seen on the front: each corresponds to a port and is on when a card is connected, blinking when there’s data transfer. I’ll start with a quick look at the front and back. The model number printed on the card was PCE8SAT-M01 VER0065. These cards happened to be pretty low cost, so I picked one up. However, I was in the situation where I needed to add a few more hard drives.Īfter a bit of looking, I came across the 8-port cards that are advertised as having a “Marvell 88SE9215 + JMicron JMB5xx” chip. For a few months I was running on the common 4-port Marvell 9215 card that can be found at all the major vendors. One of my mini ITX motherboards is limited to a single PCI Express x1 slot.
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January 2023
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