Question My SSD is giving me insulting low Read/Write speeds when transferring data between Hard Disk and SSD.

[Skinnybones]

Hello Everyone!

I just bought a new SSD to put it into my old system (Dell optiplex 755). It already has two HDDs one is: WD2500JS-75NCB2 and the other is: WD800JD-75MSA3 and the SSD that I bought is: https://www.daraz.pk/products/ssd-1...2a0e.searchlist.sku.7.44a8ac1agkP64F&search=1

The problem that I am facing is that when I write data to the SSD from any of my HDDs I only get a maximum of 50MB/s and even if I read data form the SSD and write it to any of my HDDs I still get the same 50MB/s.

And when I transfer data between my Hard Drives I still get 50MB/s so upgrading to an SSD has given me no benefit at all!!!

Someone please help me with this issue because it is truly annoying and frustating!!

 

[rgd1101]

because your hdd is slow. try transfer data between ssd

 

[SkyNetRising]

Someone please help me with this issue because it is truly annoying and frustating!!

Can you run AS SSD benchmark, make a screenshot and show here?
(upload to imgur.com and post link)

AS SSD Benchmark

A free tool to check SSD performance

as-ssd-benchmark.en.softonic.com

 

[zinkles]

And when I transfer data between my Hard Drives I still get 50MB/s so upgrading to an SSD has given me no benefit at all!!!

Adding an SSD wont help increase the speeds when transferring between your Hard Drives.

 

[Skinnybones]

Can you run AS SSD benchmark, make a screenshot and show here?
(upload to imgur.com and post link)

AS SSD Benchmark

A free tool to check SSD performance

as-ssd-benchmark.en.softonic.com

Here's the screenshot, sir:

https://imgur.com/jDI7klh

 

[SkyNetRising]

Here's the screenshot, sir:

That is very old pc (from ~ year 2007).
Your drives are running at SATA2 speeds.
250MB/s sequential speeds are about max possible.
Looks like working as supposed.

 

[Bob.B]

Hello Everyone!

I just bought a new SSD to put it into my old system (Dell optiplex 755). It already has two HDDs one is: WD2500JS-75NCB2 and the other is: WD800JD-75MSA3 and the SSD that I bought is: https://www.daraz.pk/products/ssd-1...2a0e.searchlist.sku.7.44a8ac1agkP64F&search=1

The problem that I am facing is that when I write data to the SSD from any of my HDDs I only get a maximum of 50MB/s and even if I read data form the SSD and write it to any of my HDDs I still get the same 50MB/s.

And when I transfer data between my Hard Drives I still get 50MB/s so upgrading to an SSD has given me no benefit at all!!!

Someone please help me with this issue because it is truly annoying and frustating!!

Your hdd's are the limiter try replacing those with ssd's.

 

[USAFRet]

Your motherboard port is only SATA II. That cuts the raw speed of that SSD in half.

BUT...the real problem is that you are transferring between SSD and HDD.
Even if you had the fastest SSD on the planet, it would still only transfer at the HDD speed you see.

Performance is dictated by the slowest device in the chain.

Firehose, garden hose, soda straw.

A really fast SSD is a firehose
Your SSD is a garden hose
Your HDD is a soda straw

No matter how much water you can pump through the fire- or garden hose, the soda straw is the limiting factor.
In either direction.

 

[Skinnybones]

Alright, thank you everyone for this great information. Now I finally understand what the problem is. I just have a few more questions: What does it mean by "6GB/s" on the SSD? Does it mean that if I have the best hardware and I transfer between two SSDs can it reach a speed of 6GB/s? And Why do I only get 50MB/s when I transfer data between both my Hard Drives even tho they both have 7200 rpm speed. Your guidance would be appreciated!

 

[USAFRet]

Alright, thank you everyone for this great information. Now I finally understand what the problem is. I just have a few more questions: What does it mean by "6GB/s" on the SSD? Does it mean that if I have the best hardware and I transfer between two SSDs can it reach a speed of 6GB/s? And Why do I only get 50MB/s when I transfer data between both my Hard Drives even tho they both have 7200 rpm speed. Your guidance would be appreciated!

7200RPM is not the issue.
It being a spinning hard drive is.
If that were a 5400RPM drive, you'd see little if any difference.

There is a complete difference in technology between spinning HDD and solid state storage.

If you had 2x SSDs, you'd approach seeing the performance demonstrated in the AS SSD benchmark above.
But again, your current ancient motherboard is only SATA II. 1/2 the throughput of a real SATA III drive and port.

 

[SkyNetRising]

What does it mean by "6GB/s" on the SSD? Does it mean that if I have the best hardware and I transfer between two SSDs can it reach a speed of 6GB/s?

6Gbps - means 6 gigabits or ~ 600 megabytes. That is SATA3 interface speed.
In reality SATA3 devices are limited to ~ 500-550MB per second.

On your motherboard you have SATA2 ports. Copying between sata SSDs on your pc will not go higher than 250MB/s.

And Why do I only get 50MB/s when I transfer data between both my Hard Drives even tho they both have 7200 rpm speed. Your guidance would be appreciated!

Your hard drives are old and slow. Data on them is heavily fragmented.
Even fastest modern hard drives seldom can transfer data faster than 200MB/s.
There are some HDD models, that can theoretically go up to 300MB/s (high end enterprise/datacenter drives).

 

[Skinnybones]

6Gbps - means 6 gigabits or ~ 600 megabytes. That is SATA3 interface speed.
In reality SATA3 devices are limited to ~ 500-550MB per second.

On your motherboard you have SATA2 ports. Copying between sata SSDs on your pc will not go higher than 250MB/s.

Your hard drives are old and slow. Data on them is heavily fragmented.
Even fastest modern hard drives seldom can transfer data faster than 200MB/s.
There are some HDD models, that can theoretically go up to 300MB/s (high end enterprise/datacenter drives).

Alright thanks! So this means that the speed (i.e 50 Mb/s) that I am already getting b/w my Hard Drives is normal and I can't get any higher than that due to them being old, right?

 

[SkyNetRising]

So this means that the speed (i.e 50 Mb/s) that I am already getting b/w my Hard Drives is normal and I can't get any higher than that due to them being old, right?

Yes. Pretty much.
You can benchmark your HDDs with HDtune (benchmark section).
Run benchmark and show screenshot.
Choose free 2.55 version.
https://www.hdtune.com/download.html

 

[USAFRet]

Alright thanks! So this means that the speed (i.e 50 Mb/s) that I am already getting b/w my Hard Drives is normal and I can't get any higher than that due to them being old, right?

Primarily, because they are spinning hard drives.
Being 'old' also does not help.

 

[Skinnybones]

Yes. Pretty much.
You can benchmark your HDDs with HDtune (benchmark section).
Run benchmark and show screenshot.
Choose free 2.55 version.
https://www.hdtune.com/download.html

Here are the screen shots:-

https://imgur.com/LFgE2I1

https://imgur.com/X9Xa9Zw

Sorry I have multiple partitions on the Hard Drives thats why I couldn't do the write speed test.

 

[SkyNetRising]

Here are the screen shots:-

Those are extremely old drives - from year ~ 2006.
It's surprising, they are still working.

Modern hard drives are much faster.

 

[Skinnybones]

Those are extremely old drives - from year ~ 2006.
It's surprising, they are still working.

Modern hard drives are much faster.

K. Thanks!