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Wonder how my new 840 Pro will do against my 520 cherry?

post #1 of 9
Thread Starter 
Excited after MONTHS of eying that Samsung 840 Pro 256gig that it went on sale at Newegg and picked one up for $210 today! Not only will I no longer have to deal with deleting games in order to give my 520 breathing room space but I'm real curious to see how it stakes up to this reliable 520



intel520.jpg
post #2 of 9
In AS-SSD your score will be over 1100.
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Scorpion Moose
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3570K @ 4.6ghz (1.38 Voltage) Asus Z77 Sabertooth Zotac Amp! Omega GTX 980 Ti 8GB Samsung 30nm @2133 11-11-11-28-1T (1.55 vol... 
Hard DriveHard DriveCoolingCooling
Crucial MX300 750gb 3TB Toshiba 7200rpm  Corsair H105 5 GT AP-15's, 1 Noiseblocker 40mm 
OSMonitorKeyboardPower
Windows 8.1 Pro ASUS PB277Q Razer Blackwidow Ultimate Stealth 2016 Seasonic X 1050 
CaseMouseMouse PadAudio
Corsair 600C Razer Deathadder Chroma Razer Goliathus Control Creative X-FI Titanium HD 
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by DoktorCreepy View Post

In AS-SSD your score will be over 1100.

It will??? What the hell is difference?
post #4 of 9
The difference is due to both AS SSD and the SandForce controller in the 520.

AS SSD uses only incompressible data for its test. The SandForce controller is designed to work at its best with compressible data, and does not perform as well with incompressible data, reducing its write performance. Real world data is ~75% compressible, and the AS SSD results for a SandForce based SSD will always be lower than non-SandForce SSDs.

So AS SSD is both a synthetic benchmark (its operation is not what happens in real world use) and it uses data that is not representative of real world data. It also places a higher value (more points) on high queue depth performance (4K-64 Thrd) which is never encountered by a SSD used in a PC. Some SSD manufactures have tuned their firmware to provide high queue depth performance to produce impressive looking numbers in AS SSD.

AS SSD is useful in several ways for verifying a SSD's performance, but as a single, overall judge for comparing SSD performance in actual use, it is far from perfect.
post #5 of 9
Thread Starter 
So the crystalbench is more accurate and better software for comparison then?
post #6 of 9
Here is my 840 Pro using AS SSD:




I have an older Intel 320 SSD in my other rig, and the 840 Pro absolutely SMOKES the Intel.
post #7 of 9
As-ssd uses incompressible data because after the OS and programs are already written to the drive, most other data is incompressible. Music and video etc.

The 4k mark indicates how large a chunk of data the drive can read with one request and the 840 Pro in the high 30s is quite a bit higher than last generation drives.

The 4k-64thrd is 64 requests which really isn't used very much if at all by a normal user.

As-ssd also has more options for copying and writing a cd iso and a game as well. Those would be useful in comparing the two drives.
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post #8 of 9
Having been loving the 256 and 128 Sammy Pros for the past two months. Just bought another 256 Pro last night.




post #9 of 9
Thread Starter 
Man, now im really excited after seeing those write speeds!
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