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PNY CS900 SSD series: 240/250, 480/500, 960/1TB

Posted: Tue Oct 01, 2019 2:45 pm
by meerkt
The CS900 series includes two variants for almost every size:

240 and 250GB
480 and 500GB
960GB and 1TB

Is it different controller/flash combos sold under the same series, or something else?

Re: PNY CS900 SSD series: 240/250, 480/500, 960/1TB

Posted: Tue Oct 01, 2019 4:21 pm
by Waco
Given the lack of differentiation on the spec sheet, one would hope it's just slightly different provisioning to hit price points.

Re: PNY CS900 SSD series: 240/250, 480/500, 960/1TB

Posted: Tue Oct 01, 2019 4:32 pm
by meerkt
Currently:
$30/32 240/250
$50/53 480/500
$89/95 960/1000

Ever seen any other models with a similar scheme?

Re: PNY CS900 SSD series: 240/250, 480/500, 960/1TB

Posted: Tue Oct 01, 2019 6:50 pm
by Waco
In the past I've only seen it on controller/flash refreshes. It's definitely odd to see them sold side-by-side.

Re: PNY CS900 SSD series: 240/250, 480/500, 960/1TB

Posted: Tue Oct 01, 2019 7:25 pm
by meerkt
The larger counterparts were added recently. That spec PDF is from 3 months ago. PNY's site didn't list them half a year ago.

Either they've changed components, or perhaps better binned flash for an extra 1-3 dollar, like you said.
Makes me wonder why no real midway models: 200-400-800 GB.

Re: PNY CS900 SSD series: 240/250, 480/500, 960/1TB

Posted: Wed Oct 02, 2019 5:46 am
by just brew it!
meerkt wrote:
The larger counterparts were added recently. That spec PDF is from 3 months ago. PNY's site didn't list them half a year ago.

Either they've changed components, or perhaps better binned flash for an extra 1-3 dollar, like you said.
Makes me wonder why no real midway models: 200-400-800 GB.

Ahh, OK.

Yeah, better binned flash and/or improved controller/firmware (reducing the need for overprovisioning) is a possibility. Another potential scenario is that nothing was actually improved and all they did was decrease the overprovisioning to trade off endurance for capacity.

Since that spec sheet doesn't quote any endurance numbers it is impossible to say which it might be.

Re: PNY CS900 SSD series: 240/250, 480/500, 960/1TB

Posted: Mon Dec 16, 2019 7:21 pm
by meerkt
Gee, also Crucial is doing these shenanigans with the BX500.
960GB and 1TB. Both, supposedly, SM2259XT and same Micron flash. Only apparent difference: 240TBW and 360TBW.

I think the 960GB is being phased out. The 1TB has been available for a few weeks now.

Re: PNY CS900 SSD series: 240/250, 480/500, 960/1TB

Posted: Tue Dec 17, 2019 7:31 am
by Igor_Kavinski
Is it possible 960GB and 1TB have the same amount of flash, just more reserved space in 960GB?

Re: PNY CS900 SSD series: 240/250, 480/500, 960/1TB

Posted: Tue Dec 17, 2019 7:41 am
by meerkt
Anything's possible, but the lower TBW suggests there's more to it.
Maybe flash quality has improved between the 960GB and the 1TB? Or maybe they've just become more certain of its reliability.