Power Consumption

Unlike most newer SSDs, the 840 Pro boasts incredibly low power consumption both at idle and under load. These days you typically have to trade off performance for power consumption, but the 840 Pro delivers on both fronts:

Drive Power Consumption - Idle

Drive Power Consumption - Sequential Write

Drive Power Consumption - Random Write

PCMark 7, Performance over Time & TRIM Final Words


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  • stoked - Monday, September 24, 2012 - link

    Do these drives include power loss protection like the Intel 320's? Reply
  • Kristian Vättö - Monday, September 24, 2012 - link

    Simply and shortly, no. However, Samsung showed a few enterprise SSDs as well, which may have (they were simply on display, so I'm not sure). Reply
  • lunadesign - Monday, September 24, 2012 - link

    Anand - How does this drive do in cases where TRIM isn't an option? How does it compare to the M5 Pro in this area? Reply
  • kpo6969 - Monday, September 24, 2012 - link

    Anand- If you only had a choice of two drives to put in your own system would you go with this one or the Plextor M5 Pro? Just wondering, thanks. Reply
  • Zoomer - Monday, September 24, 2012 - link

    However, the new Sandforce controller isn't out yet. We'll see. Reply
  • Magichands8 - Monday, September 24, 2012 - link

    Technically this all looks great. Nice performance and power characteristics across the board. But where is the real distinguishing factor? All these drives are getting capped out thanks to SATA limitations and how much am I going to notice the difference between 500 MB/s and 490 MB/s in real world usage? Prices remain high and capacities remain low. We have reliability, high performance, low power usage and even TRIM over RAID now. SAMSUNG, INTEL, MICRON, OCZ, SANDISK, are you listening?! We need higher CAPACITIES, NOT irrelevant PERFORMANCE gains from intermittent firmware tweaks every six months!

    I read somewhere that it's going to take another year/year-and-a-half for them to build/expand/retool plants to the point where we can see reasonable capacity increases at reasonable prices but it's very frustrating and disappointing to see basically no improvement upon capacities with extremely sluggish price improvement. It's getting to the point where I'm not even interested in new SSD reviews anymore.

    However if capacities ever hit 2TB+ for $250-$300 I have a hard time imagining what could compel me to buy traditional HDDs when my main concerns with such an array would boil down to a mechanical failure somewhere, heat, noise and space (which are all addressed by SSDs). I'm sure that the new tech coming down the pipes for magnetic storage are going to do wonders for capacities but at some point that almost becomes a liability since there will always be a huge performance bottleneck.
  • seapeople - Monday, September 24, 2012 - link

    Considering that I paid ~$2/GB for an Intel SSD just 18 months ago, and now drives that are twice as fast are selling for half as much, I'd say you're being unreasonably impatient. Reply
  • Grok42 - Monday, September 24, 2012 - link

    Prices are going down, they are still just very high per GB compared to magnetic drives. If they can get in the range of double the cost of HDDs in the next 2-3 years I think you'll see everything move over to SSD given all the other benefits.

    I think what you're feeling is that the capacity isn't going up at all. I can't really see being able to buy a 2TB SSD for less than $400 in the next few years. I do see being able to buy a 250GB drive for $80 which is about 2x what an equivalent 500GB regular HDD costs if you bought two SSDs. Seems capacity is very non-linear and nothing has improved.
  • FunBunny2 - Tuesday, September 25, 2012 - link

    The capacity issue could be mitigated a whole bunch if the SSD folks built them on 3.5 form factor. Some truly enterprise SSD vendors till do. The volume difference is substantial. Instead, we get TLC stuff. Reply
  • Death666Angel - Tuesday, September 25, 2012 - link

    3.5" drives have the same dice in there as 2.5" drives and the controller PCB layout wouldn't be any cheaper either. If you look at prices of current generation SSDs, the 256GB version usually have the best price/GB. Unless you are saying that NAND packages with more dice are more expensive (which I can't see when I compare drives of different NAND package sizes with one another, often enough those with 4 dice are cheaper than those with 2 dice), then I don't see how going to 3.5" SSDs is going to make capacities cheaper. Reply

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