The fastest SSD we've tested, the 4.5-star WD Black SN8100, just hit its lowest-ever price for Prime Day's finale — grab a 2TB drive for $180, 4TB for just $399

If you've been holding out for the final day of Amazon Prime Day in the hopes of bagging a great SSD, then boy, have I got good news for you. Thanks to our obsessive price tracking, we've just discovered a day four deal to blow your socks off, a new lowest-ever price on Western Digital's inimitable SN8100 SSD. You can score the fastest drive we've ever tested at Tom's Hardware for just $180 (2TB), or get a 4TB version for $399.

• SSDs from $59 at Amazon

The price of this drive fell in the early hours of Friday, and is so fresh it hasn't even populated the various price tracking softwares we use to keep on top of deals. The only thing we can guarantee is that this is quite possibly one of the best SSDs deals of the sale thus far, and is going to fly off the shelves at 14,900MB/s.

In case you'd forgotten, the WD Black SN8100 is the fastest solid-state drive ever to grace the Tom's Hardware Test Bench. It crushes competition from Crucial and Micron in the 3DMark Storage test for latency, bandwidth, and overall score as you can see from the results below.

(Image credit: Tom's Hardware)

(Image credit: Tom's Hardware)

(Image credit: Tom's Hardware)

Trace testing with PCMark 10's storage benchmark yields a similar story, with the top score for bandwidth, latency, and overall score. Another set of comprehensive victories, the SN8100 wins every category by a significant margin, at least in the world of SSDs, where every ms counts.

(Image credit: Tom's Hardware)

(Image credit: Tom's Hardware)

(Image credit: Tom's Hardware)

As we noted in our WD_Black SN8100 review, there's very little not to like about this drive. It has super fast Gen 5 performance, great power efficiency, good capacity, and excellent features. We only marked it down for price, and oh would you look at that, it's now 44% cheaper thanks to Amazon.

We are working hard to find the best computer hardware deals for you this Amazon Prime Day. We cover the hottest deals in real-time at our Best Amazon Prime Day Deals Live page. If you're looking for more savings, check out our Amazon Prime Day deals for a range of products, or dive deeper into our specialized SSD and Storage Deals, Hard Drive Deals, Gaming Monitor Deals, Graphics Card Deals, or CPU Deals pages.