850 evo low iops

[shadycuz]

Hey guys, I just picked up a 250gb 850 evo on sell from microcenter. Ive tried everything to get his to run at advertised speeds. My roommate has the 840 and gets double what the numbers I get.

I'm running a fx8230, m5a97 LE R2.0, 8gb gskill 1600.

Fresh windows 7 install, AHCI, changed sata cables, changed ports, newest drivers from ASUS. I just cant seem to get the iops i should. I know this driver has turbo write function but it must be built in cause I cant find where to enable it, but its almost like my drive it failing to use it.

 

[hurricane28]

Did anyone find a solid answer?
I too have same issue. I too am on AMD (FX8120+ Sabertooth 990FX R2.0). All data is from Samsung Magician.

Sequential seems fine (546/505) but IOPS are just a horror considering what's promised; 42K vs35K (instead of 100K/90K). These numbers are with an empty new 850 PRO 256GB (0.21TB TBW; only benching).

I have a 850 EVO 250Gb sitting with OS also fairly new (1TB TBW). The EVO has RAPID Mode on with 2425/1335 sequential but only 58K vs 35K Random Read IOPS.

I think AMD is the common denominator here.

Nice to see a fix for crashed FW updates but nothing solid explaining the low IOPS. All links to ISO's are dead. Samsung took care of that. Probable because to many tried DIY and failed and then complained and claimed warranty or something, but I'm just guessing about the why. But what does it matter if it looks like the driver isn't the issue here.

Can anyone confirm it's AMD or should I be looking deeper into my system and consider it's something that 'looks like OPP's but actually is (kinda) unique to my set up/situation' (and same for all others)?

I just bought an 850 EVO and I am having the same issue. My startup is slow and general performance is slow. My SSD before was an 840 EVO SSD and it was blazing fast. I have an AMD motherboard (ASUS M5A99FX) Here are my numbers.

Sequential Read: 536 (540)
Sequential Write: 502 (520)

Random Read: 46925 (98000)
Random Write: 42074 (90000)

Somebody please help!

I need more information in order to help you.

Can you post some bios screen shots?

 

[budgy]

Did anyone find a solid answer?
I too have same issue. I too am on AMD (FX8120+ Sabertooth 990FX R2.0). All data is from Samsung Magician.

Sequential seems fine (546/505) but IOPS are just a horror considering what's promised; 42K vs35K (instead of 100K/90K). These numbers are with an empty new 850 PRO 256GB (0.21TB TBW; only benching).

I have a 850 EVO 250Gb sitting with OS also fairly new (1TB TBW). The EVO has RAPID Mode on with 2425/1335 sequential but only 58K vs 35K Random Read IOPS.

I think AMD is the common denominator here.

Nice to see a fix for crashed FW updates but nothing solid explaining the low IOPS. All links to ISO's are dead. Samsung took care of that. Probable because to many tried DIY and failed and then complained and claimed warranty or something, but I'm just guessing about the why. But what does it matter if it looks like the driver isn't the issue here.

Can anyone confirm it's AMD or should I be looking deeper into my system and consider it's something that 'looks like OPP's but actually is (kinda) unique to my set up/situation' (and same for all others)?

I just bought an 850 EVO and I am having the same issue. My startup is slow and general performance is slow. My SSD before was an 840 EVO SSD and it was blazing fast. I have an AMD motherboard (ASUS M5A99FX) Here are my numbers.

Sequential Read: 536 (540)
Sequential Write: 502 (520)

Random Read: 46925 (98000)
Random Write: 42074 (90000)

Somebody please help!

I need more information in order to help you.

Can you post some bios screen shots?

I'm sorry, I dont' know how to take picture of the BIOS. What is it that you're looking for? AHCI is on in BIOS.

 

[hurricane28]

Did anyone find a solid answer?
I too have same issue. I too am on AMD (FX8120+ Sabertooth 990FX R2.0). All data is from Samsung Magician.

Sequential seems fine (546/505) but IOPS are just a horror considering what's promised; 42K vs35K (instead of 100K/90K). These numbers are with an empty new 850 PRO 256GB (0.21TB TBW; only benching).

I have a 850 EVO 250Gb sitting with OS also fairly new (1TB TBW). The EVO has RAPID Mode on with 2425/1335 sequential but only 58K vs 35K Random Read IOPS.

I think AMD is the common denominator here.

Nice to see a fix for crashed FW updates but nothing solid explaining the low IOPS. All links to ISO's are dead. Samsung took care of that. Probable because to many tried DIY and failed and then complained and claimed warranty or something, but I'm just guessing about the why. But what does it matter if it looks like the driver isn't the issue here.

Can anyone confirm it's AMD or should I be looking deeper into my system and consider it's something that 'looks like OPP's but actually is (kinda) unique to my set up/situation' (and same for all others)?

I just bought an 850 EVO and I am having the same issue. My startup is slow and general performance is slow. My SSD before was an 840 EVO SSD and it was blazing fast. I have an AMD motherboard (ASUS M5A99FX) Here are my numbers.

Sequential Read: 536 (540)
Sequential Write: 502 (520)

Random Read: 46925 (98000)
Random Write: 42074 (90000)

Somebody please help!

I need more information in order to help you.

Can you post some bios screen shots?

I'm sorry, I dont' know how to take picture of the BIOS. What is it that you're looking for? AHCI is on in BIOS.

Do you have trim enabled? Did you follow an SSD optimization guide in order for your SSD to work at full speed?

This is one of the guides i use for optimization of my OS on an SSD. http://www.overclock.net/t/1240779/seans-windows-8-install-optimization-guide-for-ssds-hdds

Let me know if this has worked for you.