Some benchmarks of my new HGST compared to the previous gen HGST.

[megatron]

http://imgur.com/a/iOn0H

Not sure if I should try to embed the screenshots but I've added my description to the gallery.

There was some uncertainty when the older HDN724040ALE640 (0S03665) tested slower than previously, it was because the test was done on a different volume (and somehow it makes a lot of difference). Luckily the faster volume is for games and its 400Gb, the other is storage 3.2Tb.

The new HDN726040ALE614 (0S04005)(which was released in Feb 2017, and I recieved mine today) got 200k in ATTO from 4kb to 64Mb test data. The previous gen with half the cache (64Mb vs 128Mb) got 174k from 16kb to 64Mb test data, and was significantly behind the 0S04005 when the test data was between 512b to 4kb.

In crystal diskmark once I had recognised that I must use volume e to give the best show of 0S03665, then 0S03665 was 75% of the performance of 0S04005.

Just did userbenchmark.com test:
UserBenchmarks: Game 58%, Desk 93%, Work 60%
CPU: Intel Core i5-4690K - 98.4%
GPU: AMD R9 280X - 53.1%
SSD: Samsung 850 Evo 250GB - 105.1%
HDD: Hitachi HDN726040ALE614 4TB - 105.8%
HDD: HGST Deskstar NAS 4TB - 52.8%
HDD: WD Green 2TB (2011) - 54.7%
HDD: WD WD10EACS-00ZJB0 1TB - 44.6%
USB: SanDisk Ultra USB 3.0 64GB - 33.9%
USB: SanDisk Extreme USB 3.0 32GB - 80%
RAM: HyperX Savage DDR3 2400 C11 2x8GB - 89.3%
MBD: Gigabyte GA-Z97X-Gaming 5
http://www.userbenchmark.com/UserRun/4752792

 

[GWANGY]

200k on a HDD is good .. sounds like an old system where data centres would only use the outer 10% of a disc as that was the fastest part... it gave maybe 20% increase over the rest of the disc for loss of 90% of storage.. you can see why thought ssd were the holy Grail/Other religious artefact. Nowadays tho no-one worries so much about HDD speeds, as ssd are so much faster and nvme are so much faster and z-memory is going to be so much faster.

 

[megatron]

I've got my OS and battlefield 4 + Warhammer 40k eternal crusade on my Samsung 850 evo, I just gained 50Gb from deleting firefall (which has shut its servers). I have a 400Gb partition as I said on the HGST and a further 1Tb of WD EACS if I want.

I'm not sure about how to use my new HD, possibly I should make a games partion at the start of the drive and leave the rest for storage. Only then would I see the benifit of that 200k performance.