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Intel 660p 1TB Slow Performance

 
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post #1 of 6 (permalink) Old 06-11-2019, 08:44 PM - Thread Starter
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Intel 660p 1TB Slow Performance

Hey guys.

Picked up an Intel 660p since Amazon was having a sale. 1tb for $99, not bad at all.

Checked on google to see what people were getting for speeds to compare against advertised.

Most people are getting around 1600-1800 read/write on crystaldisk, and I'm getting about half that exactly.

Tests end up around 750-850 for both read/write on crystaldisk.

Any ideas? The firmware is updated. The Dimm.2 that the 660p sits in is sharing it with my Samsung 970 EVO and speeds are fine with that - 3500-3600 read/write.

Any insight would be helpful! Haven't really found much by searching. Thanks!

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post #2 of 6 (permalink) Old 06-12-2019, 12:36 AM
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That’s why these drives are so cheap.

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post #3 of 6 (permalink) Old 06-12-2019, 01:03 AM
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It does seem odd that you're getting reduced maximum speeds. While I don't have a 660p to test, my experiences with other QLC drives has been that they perform exactly as they say until the SLC cache is full, at which point read performance drops to ~130MB/s and write performance drops to 80-100MB/s.

I don't know how feasible it is to test only the 660p in the DIMM2? Or swap their places? Probably not very.


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post #4 of 6 (permalink) Old 06-12-2019, 01:08 AM
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The 660p is that cheap because its actually slower than a good old AHCI drive in many cases so you get what you pay for


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post #5 of 6 (permalink) Old 06-13-2019, 05:31 AM
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Quote: Originally Posted by lifeisshort117 View Post
Hey guys.

Picked up an Intel 660p since Amazon was having a sale. 1tb for $99, not bad at all.

Checked on google to see what people were getting for speeds to compare against advertised.

Most people are getting around 1600-1800 read/write on crystaldisk, and I'm getting about half that exactly.

Tests end up around 750-850 for both read/write on crystaldisk.

Any ideas? The firmware is updated. The Dimm.2 that the 660p sits in is sharing it with my Samsung 970 EVO and speeds are fine with that - 3500-3600 read/write.

Any insight would be helpful! Haven't really found much by searching. Thanks!
what's your motherboard. It's probably running at pcie 2.0 x2 or pcie 3.0 x1 instead of pcie 3.0 x4 because it's sharing resources with other devices (m.2,pcie, sata). crystaldisk info will tell you the speed it's running

read the motherboard's manual to see if it's sharing resources.

You could change it positions with the 970 evo to make sure that it isn't an ssd problem.
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post #6 of 6 (permalink) Old 06-13-2019, 07:22 AM
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NVMe needs 4 lanes all to itself for full speed.

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