So.. Both harddrives are 9.5 mm, 2,5" with 1 TB of space.

One of them is an SSHD with 64 mb cache.
Other one is a HDD which has 8 mb cache.

Both have an rpm of 5400.

How big is the difference here? The price is nearly doubled for the SSHD one so I want to make sure it's worth it :>.

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The SSHD one is =>

Seagate Intern Harddrive Thin SSHD 1 TB SATA 2.5" (64MB Cache / 5400RPM)

• LAPTOP SSHD 1TB SATA 2
• 5" HYBRID
• 64MB Cache
• 8GB MLC SSD 9
• 9,5MM NMS

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The HDD one is =>

Seagate Momentus 1TB 2,5" Intern HDD (5400 rpm / 8MB Cache)

9,5mm high (doesnt say much more than this XD)

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Help a PS Nationist out!

http://www.ign.com/wikis/playstation-4/PlayStation_4_Hard_Drive_Speed_Test_Comparison

IGN did a comparison.

Links please... But I would try to get 7200 rpm

I'd rather not get either. Just go with a pure SSD.

Erm.. swedish websites matter?

http://www.webhallen.com/se-sv/hardvara/171424-seagate_intern_harddisk_thin_sshd_1_tb_sata_25&atcl=search:live

http://www.webhallen.com/se-sv/hardvara/179706-seagate_momentus_1tb_25_intern_hdd

XD, found out that the SSHD is 6Gbps but not sure about the other

Too expensive. I mostly want it for the 2x storage :>

i would wait a few months to see results from others before changing the HDD some HDDs types and brands caused issues with the PS3 for example

also you should consider just a plain 7200rpm HDD its cheaper and should also provide gains they also have 6bps data transfer and 64MB cache

those gains look laughable on ign why in so many case did the load time slow down?

Fine then just find an SSHD with the fastest read and write speeds along with the lowest access times. (Trust me on this.) 

Erm.. mind giving a hand? XD

But 7200rpm generates more heat :(