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Phone Man said:

Those Samsung 840 units use the new TLC (Triple Level Cell) with 3 bits per cell. The 840 PRO are still MLC ( 2 bits per cell). It will be interesting to see how the new TLC units hold up, but Samsung does make a great product.

Jim

Where did you find that Jim? Neither Newegg nor the Samsung site has it.

Britton30 said:

Phone Man said:

Those Samsung 840 units use the new TLC (Triple Level Cell) with 3 bits per cell. The 840 PRO are still MLC ( 2 bits per cell). It will be interesting to see how the new TLC units hold up, but Samsung does make a great product.

Jim

Where did you find that Jim? Neither Newegg nor the Samsung site has it.

AnandTech - Samsung Releases TLC NAND Based 840 SSD

Here is more information about endurance.

http://www.anandtech.com/show/6459/s...ce-of-tlc-nand

Jim

Excellent information Jim.

Tell me if you agree with my take-aways (all based on generalizations):

• A MLC will last about 3 times longer than a TLC under extreme conditions.
• Under average use a MLC has an approx. 10 year lifespan, a TLC about 5.

This, of course, ignores strategies to reduce writes and prolong the life of the drive.

TVeblen said:

Excellent information Jim.

Tell me if you agree with my take-aways (all based on generalizations):

• A MLC will last about 3 times longer than a TLC under extreme conditions.
• Under average use a MLC has an approx. 10 year lifespan, a TLC about 5.

This, of course, ignores strategies to reduce writes and prolong the life of the drive.

A few pictures from AnandTech. And the difference is reflected in the pricing.





Also the 840 has more overprovisioning to compensate.

Jim

The lifespan suits me. I probably won't live as long myself - LOL. The prices at Newegg sales are a lot lower. The 128GB was $80 the other day.

Thanks Jim. What I took away from the article is that the 830 series is the best way to go since they say fewer bits per cell increases longevity.

I wish authors would explain things instead of saying TLC, MLC, MDX, and P/E. Well into it I found P/E must mean program/erase.

All in all I don't fret over my SSDs wearing out and I even defragged one of them.

Samsung 840 SSD of 120GB for $99.99 if you claim EXTRA $15 OFF with promo code EMCJHHF24 (expires 12/25/2012)

http://www.newegg.com/Product/Product.aspx?Item=20-147-185&nm_mc=EMCPB-122012&cm_mmc=EMCPB-122012-_-PB-_-Item-_-20-147-185

SanDisk SDSSDP-256G-G25 256GB Solid State Drive - 2.5, SATA III, Up To 490 MB/s Read Speed, Up To 350 MB/s Write Speed at TigerDirect.com
$159.99

EVGA 012-P3-1571-KR GeForce GTX 570 HD Video Card - 1280MB, GDDR5, PCI-Express 2.0 (x16), Dual DVI, HDMI, DisplayPort, DirectX 11, Dual-Slot, SLI Ready at TigerDirect.com
$269.99 after rebate

Coolmax ZU Series ZU-1000B 1000W Power Supply - 80 PLUS Bronze, ATX, Modular, 140mm Fan, Active PFC, NVIDIA SLI, ATI CrossFire at TigerDirect.com
$79.99 after rebate

Crucial BLS2G3D1339DS1S00 Ballistix Desktop Memory Module - 2GB, PC3-10600, DDR3-1333MHz, 1.5V, CL9, 240-pin DIMM at TigerDirect.com
$6.99

Untell midnight 2/4/2013 PT

Crucial M4 CT256M4SSD2 2.5" 256GB SATA III MLC Internal Solid State Drive (SSD)

$159.99 With Promo Code: EMCYTZT2886
Free Shipping!

Newegg.com - Crucial M4 CT256M4SSD2 2.5" 256GB SATA III MLC Internal Solid State Drive (SSD)

That M4 is a really good deal. Too bad I just bought an OCZ Vector.