Kuntz

SSD's will never be as cheap or effective as HDD's, they just take too much space to store 1 bit versus the HDD. Short-stroke HDD's are still better than SSD's currently too, in terms of access times and bandwidth and cost. SSD's have a looong way to go.

003

No... A good SLC SSD (such as an Intel X25-E 64Gb) absolutely destroys spinning hard drives (short stroked or not) in terms of access time.

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T3h_Ch33z_Muncha

Lolwhat! Maybe at the moment SSD's can't compete in pure storage with 2TB hard drives, but you think about the amount of time it has taken to get 2TB. Compare that with the amount of time it's taken for SSD's to get where they are now.

As for short-stroked hard drives, they are still in multiple milliseconds of access time for a random seek. SSD's are measure in fractions of one millisecond.

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vtech1

i disagree as my cheetah will kick the raptors butt and i have both the cheetah(15.5k rpm) and the raptor (10k rpm) but there might be some truth to the raptor outperforming the 2tb drive, we will have to wait for the benchmarks

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DuckieHo

Disagree about what? I didn't say Raptors... I said VelociRaptor which are 40% faster than your pre-ADFD Raptors.


Too much space to store? SSD use microscope NAND gates.

Here's a really rough estimate:
At current tech, they can fit 16GB + controller in a microSD (11x15x1mm=165mm^3). A standard HD is roughly 140x101x20mm=282,800mm^3.

165/16GB=10.3mm^3
282800/2048GB=138mm^3

That means SSD can be at least TEN TIMES more dense than HDD. Double-stacked, triple-stacked, quad-stack Flash memory will allow more storage than HDD in the same form factor.

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pez

Yep I'm sorry that's slightly disappointing to you?

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DuckieHo

Then how can you possibly claim cache made your new drive perform better? Have you stop to consider the data density, platter count, firmware, and/or controller may have an impact on the performance?

It's like claiming your new car goes so much faster than your old car due to a spoiler. You are ignoring the fact that your old car was an Accord and your new car is a Porsche.

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To answer most of your questions: (1) a fridge cannot cool a PC (2) 64-bit OS for over 3.4GB (3) If a PCIe card fits, it should work (4) Resolution, not screen size (5) If you have a question, it is not news (6) Report, not respond to Spam (7) Single-Rail/Non-Modular PSUs are not always better than Multi-Rail/Modular

pez

You must've misunderstood me slightly, but I have no need to explain myself as that analogy had nothing to do with what I was speaking of. The 7200.12 Seagate drives have a 16mb and 32mb cache version.

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Review/Comparison: AMD Athlon X2 7750 BE vs. AMD Phenom II X4 940 BE

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Kuntz

My bad. I guess my info is outdated

So in your opinion, SSD would eventually overtake HDD's in capacity? I thought I read somewhere the downside to SSD was that it took 12 gates to store 1 bit?!

edit-From Wikipedia:

"Capacity: As of 2008, far lower than that of conventional hard drives (Flash SSD capacity is predicted to increase rapidly, with experimental drives of 1 TB,[30][31] but hard drive capacity also continues to expand, and hard drives are likely to maintain their capacity edge for some time).[32]
Lower storage density: Hard disks can store more data per unit volume than DRAM or flash SSDs, except for very low capacity/small devices."

I read some article on this site awhile ago, I would like to find it again. I'm all for new tech, but it sort of debunked some myths and hype around SSD's.

DuckieHo

This is what I had issue with:
1) There shouldn't be any noticable difference between cache of the same drive
2) This is computers. Anyone can recreate your experience with hardware
3) SATA 1.5Gb/s to SATA 3Gb/s has absolutely no effect on performance what-so-ever... unless you have a SSD.

I hate hate hate the spread of misinformation.


Again... you can not compare cache performance without isolating data density, platter count, controller/firmware:

7200.12 160GB 8MB = 1x160GB platter
7200.12 250GB 8MB = 1x250GB platter
7200.12 320GB 16MB = 2x160GB platters
7200.12 500GB 16MB = 1x500GB platter
7200.12 750GB 32MB = 3x250GB platters
7200.12 1TB 32MB = 2x500GB platters


How big is each gate?

I don't quite get this... if smaller devices can are more data dense then why isn't it possible for larger devices to continue to be as data dense. Memory ICs scale extremely well. Current cost make it too expensive to scale up but the possiblity is there if the costs of memory modules go down. I believe a 32GB microSD module was just developed. It would just be too expensive to jam 64 32GB ICs onto a PCB + controller + RAM but it is possible. The size of such a unit would be smaller than a 3.5" hard drive.

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To answer most of your questions: (1) a fridge cannot cool a PC (2) 64-bit OS for over 3.4GB (3) If a PCIe card fits, it should work (4) Resolution, not screen size (5) If you have a question, it is not news (6) Report, not respond to Spam (7) Single-Rail/Non-Modular PSUs are not always better than Multi-Rail/Modular