Thank you for buying via links and ads on this site,
which earn me advertising fees or commissions.
As an Amazon Associate I earn from qualifying purchases.

Other World Computing...
B&H Photo...
Amazon
As an Amazon Associate I earn from qualifying purchases.
Up to 1527MB/s sustained performance
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$348 $298
SAVE $50

$170 $120
SAVE $50

$300 $175
SAVE $125

$989 $869
SAVE $120

$400 $310
SAVE $90

$1499 $1149
SAVE $350

$322 $242
SAVE $80

$1499 $1149
SAVE $350

$180 $180
SAVE $click

$500 $275
SAVE $225

$180 $156
SAVE $24

$130 $100
SAVE $30

$3498 $2998
SAVE $500

$1699 $1149
SAVE $550

$280 $230
SAVE $50

$1899 $1499
SAVE $400

$4499 $3499
SAVE $1000

$2198 $1998
SAVE $200

$3998 $3498
SAVE $500

$1799 $1699
SAVE $100

$18599 $16599
SAVE $2000

$1149 $849
SAVE $300

$650 $450
SAVE $200

$199 $119
SAVE $80

$280 $200
SAVE $80

$1399 $1049
SAVE $350

$1199 $779
SAVE $420

$250 $220
SAVE $30

$1699 $1149
SAVE $550

$195 $125
SAVE $70

$79 $49
SAVE $30

$120 $30
SAVE $90

$198 $148
SAVE $50

$3899 $1499
SAVE $2400

$2999 $1999
SAVE $1000

$1699 $899
SAVE $800

$1698 $1198
SAVE $500

$1149 $849
SAVE $300

$1399 $1049
SAVE $350

$1498 $998
SAVE $500

$2797 $2497
SAVE $300

$280 $230
SAVE $50

$799 $549
SAVE $250

$899 $549
SAVE $350

$420 $170
SAVE $250

$1699 $1149
SAVE $550

OWC Envoy Pro EX SSD
Blazingly fast Thunderbolt 3 SSD!

Up to 4TB capacity, USB-C compatible.

USB-C model also available


Great for travel or for desktop!

Seagate 320GB Momentus 7200.3

Last updated 2009-06-01 - Send Feedback
Related: hard drive, Seagate, storage

The 320GB Seagate Momentus 7200.3 is a vastly better performer than the 2007 vintage 160GB Momentus 7200.2; it’s an inexpensive upgrade, well worth the money for the space and performance gains.

As of late 2008, Seagate Momentus 7200.3 offers the fastest sustained read and write speeds available in a 2.5" notebook hard drive (the Western Digital VelociRaptor won’t fit in most notebooks).

See the review of the Intel X25-M solid state drive for more performance data; this is one drive that performs very nicely on real-world tasks.

DiskTester results

Test mule: MacBook Pro (Oct 2008 unibody) 2.8GHz 
SATA hardware: internal SATA II connector
Driver: Apple standard
Drive model: ST9320421AS

Sequential sustained transfer

These are excellent results for a laptop drive, exceeding the speeds seen only 18 months ago in 3.5" desktop drives. Peak performance is reached with a 512K transfer size, but 128K is very close.

# Sequential sustained transfer
----- Averages for "sg320" (512MB/start, 3 iterations) -----
Chunk Size Write MB/sec Read MB/sec
32K 51.0 73.4
64K 64.7 86.9
128K 76.1 86.8
256K 82.8 87.3
512K 86.7 86.8
1MB 86.7 86.4
2MB 87.0 87.0
4MB 86.6 87.4
8MB 86.6 87.1
16MB 86.2 87.4
32MB 86.5 86.9

Speed across the drive (area test)

These are class-leading results for a laptop drive in late 2008, exceeding the speeds seen only 18 months ago in 3.5" desktop drives. Results are shown for 1MB and 32MB transfer sizes.

---------------- Averages for "sg320" (512MB/1MB, 3 iterations) ----------------
Area (295.9GB) Write MB/sec Read MB/sec
0% 86.2 86.9
10% 84.5 85.3
20% 82.3 81.9
30% 79.1 79.2
40% 77.4 76.1
50% 72.3 71.7
60% 68.1 67.0
70% 62.5 62.1
80% 59.4 59.0
90% 53.7 53.6
100% 45.0 44.7
Average write speed across the volume: 70.0MB/sec
Average read speed across the volume: 69.8MB/sec ---------------- Averages for "sg320" (512MB/32MB, 3 iterations) ---------------
Area (295.9GB) Write MB/sec Read MB/sec
0% 86.2 87.5
10% 85.0 85.2
20% 81.7 82.1
30% 78.7 79.5
40% 77.0 77.6
50% 72.2 71.2
60% 67.9 67.5
70% 62.6 61.8
80% 59.7 59.2
90% 53.6 53.5
100% 45.0 44.7
Average write speed across the volume: 70.0MB/sec
Average read speed across the volume: 70.0MB/sec

Create and read files

This test times how long it takes to create and flush files to disk, and to read them back, with the Mac OS X cache bypassed so as to reflect actual hard drive performance. The test is run on empty freshly-formatted drive.

disktester create-files / read-files
Action Time (seconds) MB/sec
Create 5120 1MB files 59.4 86.2
Read 5120 1MB files 59.9 85.5
Create 512 10MB files 59.0 86.8
Read 512 10MB files 59.0 86.8

With the advent of “stutter” in mediocre solid state drives, it’s not a bad idea to look at the consistency of performance, easily visualized here.

Variance of 10MB file creation times (ms)
 
OWC Accelsior 4M2 PCIe SSD
6000 MB/sec!
Mac or PC.


Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!
OWC Thunderblade Thunderbolt 3 SSD

Blazing fast, up to 16TB.

YEE HAH!



√ No more slow and noisy hard drives!
OWC Envoy Express

World’s first Thunderbolt 3 M.2 NVME SSD enclosure.

Super fast, bus-powered, 3.3 oz, DIY easy, rugged and compact!


See also OWC Express 4M2
√ No more slow and noisy hard drives!

MacPerformanceGuide.com
View all handpicked deals...

Lexar 128GB Professional 2000x UHS-II SDXC Memory Card
$170 $120
SAVE $50

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2020 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__