 So today I have a test that's very interesting to me because I copy a lot of data around. So what I have here is my little chart that I'm going to make and I'm going to be looking at the performance of various USB chipsets and various drive solutions. So I have three different solutions that I'm going to be using. The first of which you can see here is I'm going to do a, oh did I sprite one terabyte? Oh boy, it's been a long day already guys. These are all, you know what, let's just, yeah these are all one gigabyte file copies. Okay, so the first solution is a USB 3 Seagate GoFlex adapter plugged into a Patriot wildfire drive. It's the highest performance drive, it's pretty much the highest performance drive on the market. So we're going to see what kind of thorough put we can get using that. Next we have a Seagate Free Agent GoFlex, this is a 5400 RPM storage drive. This is also hooked up to a USB 3 chipset here at the back. The one I have here is the native A75 chipset one. I'm going to compare that against the Asmedia one which based on that it's just started turning up and it's on an ASUS board. I'm guessing it's their own kind of custom thing and it's probably going to turn up on other ASUS boards in the future so the performance may be relevant. I'm also going to test against the ever popular Renesas. So this is on some of the higher end boards particularly. They used to be NEC USB 3 chipsets. So you can see I've got one here on the Z68A GD80 and finally I'm going to test against USB 2. So I'm going to test against Intel's USB 2 controller just because it's a much more known quantity than the one on this A75 chipset. The last drive configuration I'm going to test is the Mushkin Ventura Pro. This is a USB 3 drive and I'm going to find out what the difference in performance is between a high performance USB thumb drive like this, an extreme performance SSD on USB 3 and a regular hard drive on USB 3 across all these different platforms. So I'll be back with results or with any abnormal findings throughout the testing here. So the first round of testing on the ASUS A75 board is done. So on the A75 controller, I accidentally wrote these in the wrong box, I got 34.5 megabytes per second consistently and I'm just timing this on my iPhone while I do the transfer. So I've got 29 seconds, 29 seconds and 29 seconds to transfer my 1 gigabyte file. So I'm going to go ahead and assume that's a chipset limitation on large file transfers. On the ASMedia controller, however, I got 125 megabytes per second on the Go Flex with the wildfire SSD. So let's assume that that's pretty much the limits of what we can achieve with this USB 3 controller. And then next, we have 67 megabytes per second on the Mushkin Ventura Pro. Remember that's the USB 3 stick. And finally, 50, let's call it 53 megabytes per second on the drive with a hard drive as opposed to a solid state drive. Okay, so what I'm going to do is I'm going to change motherboards here, change platforms, going to switch over to my Intel platform. We're going to test the USB 2 for reference as well as the Renesas controller, which you can see down there somewhere. Right there. All right, well, I'm done most of them. So I'm just going to run my last test here. And I'll talk a little bit about the results that I've seen so far while it's running. So yeah, it's not sophisticated, but yes, this is actually how I'm testing it. I press stop when it's done transferring. So here we go. So I've tested the NEC Renesas, however you pronounce that, I have no idea, controller. You can see that, okay, a few things become fairly apparent right off the bat here. Number one is that the wildfire is not a bottleneck for any of these interfaces. I mean, we're not even seeing anywhere near the limit of what that thing is capable of doing. Next is that the Ventura Pro seems to max out around, there we go, it's done. So that took, oh, surprise, surprise, 37. So that'll be around 27 megabytes per second. Okay, so these are all in megabytes per second. Okay, so the Ventura Pro is limited to 67 megabytes per second, because you can see these two controllers are both capable of higher numbers up to 125 or 111 megabytes per second with the GoFlex interface on the wildfire drive. Okay, down here you can see that with the mechanical drive, we don't see any higher than these are both 53 megabytes per second. And we can also see that the A75 USB3 controller is bottlenecking pretty much every solution here. The USB2 controller performs consistently with all of them because, once again, it is the bottleneck, not the drives themselves, and the Renesas one, that appears to be the limit because we see that the GoFlex wildfire performs better on the ASMedia controller. So that ASMedia controller is actually looking pretty darn good. My results are not scientific and they are not accurate to within 0.01 of a megabyte per second. These are all approximate numbers, so take them with a grain of salt. But there you have it. The Renesas controller is approximately four times faster than USB2, the ASMedia controller is about another 10% faster than that, and then the A75 controller seems to bring up the rear here as far as the USB3 controllers go. So thank you for checking out my video. Don't forget to subscribe to Linus Tech Tips for more unboxings, reviews, and other computer videos.