It's because the SSD is performing like 50% of the performance, I want to guarantee at least 75% and... I didn't understand so much the first sentence: you believe the compat. is true or false? Thanks!With regard to SSD compatibility, as long as it lists AHCI that's the best assurance you're likely to get IMO.
The other thing I'd check is that your motherboard's BIOS has the option to boot from SCSI / add-in cards.
One thing to bear in mind though is that a modern version of Windows (7 and later) will happily use an SSD in IDE mode, AHCI isn't required per se, it's just optimal. Unless you've got a weird motherboard chipset (ALi, VIA), I'd probably just use the motherboard's SATA ports in IDE mode over a third party's adapter.
If you need to go for a SATA card, I'd check in the board's manual which PCI-Express slot would be optimal for the card as board resources are sometimes shared between particular slots and other bits of board hardware.
One other thing to bear in mind is that with LGA775 I'd say there's no chance on the planet that you'll get the full SATA III bandwidth out of an SSD regardless of which solution you go for. SATA PCI-E cards usually have small enough connectors to rule out making the most of PCI-Express bandwidth (for example, an x4 connector running at PCI-E version 2.x will push at most 250 megabytes per second, which doesn't exceed SATA II). Maybe if you pay more for the card than the entire computer is worth, then maybe you could end up with a 8x or 16x PCIE SATA card, which assuming the board doesn't run into any resource sharing issues with it, then you might end up with full SATA III bandwidth.
Another thing I'd check is what version of PCI-Express your board supports and check that the card you're thinking of using doesn't list any compatibility issues with it.
One last note - a reasonably decent SSD running at SATA 1.5Gbps (SATA I) is still an awful lot faster than any HDD. It's the data access times that make SSDs feel so much faster than HDDs, not the raw bandwidth.
With regard to SSD compatibility, as long as it lists AHCI that's the best assurance you're likely to get IMO.
It's because the SSD is performing like 50% of the performance, I want to guarantee at least 75%
One thing to bear in mind though is that a modern version of Windows (7 and later) will happily use an SSD in IDE mode, AHCI isn't required per se, it's just optimal. Unless you've got a weird motherboard chipset (ALi, VIA), I'd probably just use the motherboard's SATA ports in IDE mode over a third party's adapter.
One other thing to bear in mind is that with LGA775 I'd say there's no chance on the planet that you'll get the full SATA III bandwidth out of an SSD regardless of which solution you go for. SATA PCI-E cards usually have small enough connectors to rule out making the most of PCI-Express bandwidth (for example, an x4 connector running at PCI-E version 2.x will push at most 250 megabytes per second, which doesn't exceed SATA II). Maybe if you pay more for the card than the entire computer is worth, then maybe you could end up with a 8x or 16x PCIE SATA card, which assuming the board doesn't run into any resource sharing issues with it, then you might end up with full SATA III bandwidth.
(AHCI) Which almost LGA-775 should have unless it's something exotic.
A PCIe 2.0 x4 link is 2000MB/s (4x 500MB/s, in practice ~1500MB/s). Older PCIe 1.1 is only 250MB/s per lane, but it'll still give 1000MB/s with a x4 link, so should be enough for a single SSD.
If you can find an add-in with a PCIe 2.0 x2 interface or higher you should get about maximum bandwidth.
f.x.
https://www.startech.com/en-us/cards-adapters/pexsat34rh
Startech 4-port SATA III and PCIE v.2.0 controller
I don't think my SSDs were not performing at full spec when I had them connected to this model. The ratings on the Startech seem lackluster overall, but like more positive customers said, "It does the job". It got my attention before I bought the first unit because it has port-multiplier capability and features "Hyper-Duo" -- a Marvel proprietary form of caching similar to Samsung's RAPID and INtel's ISRT -- "Smart Response Technology".
Plus, it offers 0/1 RAID configurations as well as AHCI.
Though don't forget that in that era there were a lot more third party chipsets in the mainstream. I wouldn't trust ALi / VIA as far as I could throw them for use with an SSD (I remember occasions where I had to jumper a WD Black to force it to 1.5 Gbps), and all the nvidia board chipsets I've encountered don't do AHCI, IIRC. Samsung recently warned me about AMD chipsets "older than 2017", advising me to disable NCQ for example. Intel would be the safe bet (in terms of confidence for bug-free operation with an SSD), IMO.
Microsoft Windows 10 v21H2 from Insider program with only the ethernet driver installed from Realtek and the rest from Windows Update. Running very stable. I also left the JMicron onboard on instead of the P45 one, do you consider P45 > JMicron or the opposite?I looked up that board and it has an Intel chipset (P45 / ICH10R) with SATA 3Gbps and AHCI support according to the manual. If I were you, I'd stick with the onboard SATA as I would have a lot more confidence in that driving an SSD well than some cheapo SATA card. Bandwidth really isn't everything, neither of the applications you mentioned are typically thirsty for that kind of performance AFAIK. Intel has a good rep and can be relied upon to stick to the specs a lot better than most manufacturers in my experience.
I believe you mentioned Windows 10 in another thread, is that what you're using?
Microsoft Windows 10 v21H2 from Insider program with only the ethernet driver installed from Realtek and the rest from Windows Update. Running very stable. I also left the JMicron onboard on instead of the P45 one, do you consider P45 > JMicron or the opposite?I looked up that board and it has an Intel chipset (P45 / ICH10R) with SATA 3Gbps and AHCI support according to the manual. If I were you, I'd stick with the onboard SATA as I would have a lot more confidence in that driving an SSD well than some cheapo SATA card. Bandwidth really isn't everything, neither of the applications you mentioned are typically thirsty for that kind of performance AFAIK. Intel has a good rep and can be relied upon to stick to the specs a lot better than most manufacturers in my experience.
I believe you mentioned Windows 10 in another thread, is that what you're using?
I thought and think the same and switched from JMicron (I turned it off) and now using the P45 controller, you all helped me so much, will stay the way it's, the more I can do it's RAM upgrade for 2x 4 GB, if I find sure. Thank you you all!Intel > Micron IMO.
Side note - considering you're using this computer for professional purposes, I'd stay well away from the insider program if I were you unless your work explicitly involves testing on the latest development build of Windows (and if it does, I'd suggest having a test PC for that).
Since it has now eco-mode and more features like separated OEM drivers I decided to install the Insider program part for using 21H2, for the future I can reconsider going out. Thank you!Intel > Micron IMO.
Side note - considering you're using this computer for professional purposes, I'd stay well away from the insider program if I were you unless your work explicitly involves testing on the latest development build of Windows (and if it does, I'd suggest having a test PC for that).