IDE on SATA

[prince_xaine]

Okay this is kind of a weird question. I have an old computer, with an old (fully updated) BIOS that only gives two options for accepting Hard Disk Drives. It allows IDE or RAID. The strange thing is, The ports are definitely SATA, pretty sure it's SATA 2. I've been looking into it, as the read speed of a SSD I have installed only reaches about 200 MB/s, which is obviously underperforming for SATA 2. The computer is a Dell Inspiron 530S.

Any ideas?

 

[mdd1963]

The BIOS might have been in use by more than one computer...

SATA2 specs were 3,000 Mbps, which is/was 375 MB/sec (hypothetical) on it's best day, but, those speeds were never seen anyway due to overhead...although 200 MB/sec does seem a tad low. (Is this on CrystalDiskMark/ sequential reads?)

My guess is the Inspiron itself is the bottleneck....

 

[timmoseus]

The "IDE" configuration, also known as "Legacy" in newer BIOSs, is the precursor to AHCI. RAID is specifically for multiple drives. It can run a single drive, but there is no performance gain on a single drive in RAID vs IDE. At least, not that I am aware of. The throughput should never reach the theoretical max (375 MB/sec) without being in a pure test environment with the best possible conditions.

This was posted in another topic (http://www.tomshardware.com/answers/id-2326564/ide-ahci-performance-differences.html):
https://www.diffen.com/difference/AHCI_vs_IDE

mdd1963 is right. The Inspiron (more accurately it's mother board) is the bottleneck. Hope it helps.

 

[prince_xaine]

Ok thanks, I thought as much. It just seemed odd. I did TRIM the SSD and was able to get 220 MB/s Read and 260 MB/s Write, which is actually odd, it writes faster than it reads. Only 40 GB of the drive is used, but it might be due to the large Virtual RAM I have setup on the SSD. (8 GB) Although, it was reading/writing the same before I setup the RAM.