Sapphire R9 280x Dual-X RAM module?

[modernwar99]

I have heard hynix memory modules are about 10-15% faster than eplida memory. I can't find any info on google about this specific card, so which memory module does the Sapphire R9 280x Dual-X use?

 

[chris987]

try gpu z latest version apart from memory type also state the brand

 

[Vic 40]

Here it says hynix,
http://www.tweaktown.com/reviews/6210/sapphire-radeon-r9-280-dual-x-3gb-oc-video-card-review/index2.html