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Alpha Centauri

macrumors 65816
Original poster
Oct 13, 2020
1,446
1,143
Hi folks

been running an Evo 850 1TB as an internal in this mid 2009MBP w/out issues, it's 80% full. Catalina patch as OS.

About to order an Evo 870 2TB to replace it and wonder if anyone has run into issues with this drive. Will format to APFS, clone from the 850. Thought I read about some problems in MP bays, folks going with Evo 860 instead?

The currently installed SSD will most likely move to the CD drive slot using a carrier I already own. Guess this interface will be rather slow?

Cheers
 

jav6454

macrumors Core
Nov 14, 2007
22,303
6,264
1 Geostationary Tower Plaza
Both SATA ports (the main drive and DVD) are SATA 2 ports if I am not mistaken on the 2009 MBPs.

A Samsung EVO 850/970 will not break that interface on the most important metric, Random 4K read/write. On Sequential speeds, sure, you will hit that 300 MB/s bottleneck, but honestly, out of your usage, 99% of the time Random 4K speeds are the important ones.

So don't overthink it, get yourself the new drive.
 
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Alpha Centauri

macrumors 65816
Original poster
Oct 13, 2020
1,446
1,143
Both SATA ports (the main drive and DVD) are SATA 2 ports if I am not mistaken on the 2009 MBPs.

A Samsung EVO 850/970 will not break that interface on the most important metric, Random 4K read/write. On Sequential speeds, sure, you will hit that 300 MB/s bottleneck, but honestly, out of your usage, 99% of the time Random 4K speeds are the important ones.

So don't overthink it, get yourself the new drive.
Still haven't figures multi quotes out.

Indeed main drive supports link & negotiated speed of 3 Gigabit (265MB/s write current SSD). Apple has zero info on DVD SATA speed so one would assumes it being the same.

Since OS 10.5 has lost bootable FW support I'm hoping it's still possible from within DVD bay. Any idea? Plan to clone new drive whilst in DVD bay and swap new SSD then as main drive.

I believe trying through FW is what corrupted 2 backup drives using the one ext FW case I own in this scenario.

So this really is to have backups for data again as Cat patch is not 100% stable with the dGPU selection with this old HW, in my case a SW issue. All needs to last another 6 months and then hope to finally upgrade.
 

jav6454

macrumors Core
Nov 14, 2007
22,303
6,264
1 Geostationary Tower Plaza
Still haven't figures multi quotes out.

Indeed main drive supports link & negotiated speed of 3 Gigabit (265MB/s write current SSD). Apple has zero info on DVD SATA speed so one would assumes it being the same.

Since OS 10.5 has lost bootable FW support I'm hoping it's still possible from within DVD bay. Any idea? Plan to clone new drive whilst in DVD bay and swap new SSD then as main drive.

I believe trying through FW is what corrupted 2 backup drives using the one ext FW case I own in this scenario.

So this really is to have backups for data again as Cat patch is not 100% stable with the dGPU selection with this old HW, in my case a SW issue. All needs to last another 6 months and then hope to finally upgrade.
In older threads, it was established that the DVD combo SATA connection was SATA II, in other words 300 MB/s. As per booting from there, I know it is possible, yet don't actually know the procedure to do so.
 
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