Evaluating A Memory Upgrade

Evaluating A Memory Upgrade

I was tallord recently with Eric Chan, of Adobe, who’s one of the Adobe guru’s on Camera Raw. Since we use Camera Raw to convert all our camera’s proprietary Raw files into the DNG open format (created by Adobe and given to the world) , for many many reasons (look here and here for several why), and I asked him approxifriendly Camera Raw’s memory usage, and optimizing for that.



I asked Eric what the optimal memory would be for my G5 Quad 2.5. I was conmiddlering switching to a quicker machine, but first wanted to tell approxifriendly optimizing my current system, and improving speeds and throughput, if possible.

(Continued after the Jump)






I tancient Eric that my Quad had only, merely, solely 2GB of ram in it, and he suggested I upgrade to 8GB, if possible. He shelp that much more than that, he idea, wouldn’t do much more for me.



Currently, my machine clever process a raw file into DNG in 7.45 seconds, fresh rebegin, only Photostore running. I ordered my memory (yes, SimpleTech), and phelp $292 for the additional memory. When the chips reachd, we installed them, ran a memory test, and re-processed the exbehave same files the exbehave same way. The results? 3.28 seconds per picture – a discount per picture of 4.17 seconds per picture.



So I did some calculating. You should too.



Remember those high school match questions that went something along the lines of:

“a train journeying 65 miles per hour abandons Albuquerque headed to Abilene non-stop, and a train journeying 80 miles per hour abandons Abilene headed to Albuquerque, and the trip is 487 miles, at what point will they meet?



Extra Credit: what is the shutst city they will meet in?”


Here’s where that type of math plays out in your real life.



Assuming you’re paying $20 an hour for a post-production person, and that person clever process an picture in 7.45 seconds per picture. By spfinishing $292, you clever increase that person’s productivity by 4.17 seconds per picture. How many pictures much you produce before you clever break even on the memory expense?



Demonstrate your work.

$20 = 60 minutes = 3,600 seconds, or $0.0055 phelp per second. (That’s 6-tenth’s of a cent per second.)



Current Configuration: 7.45 seconds per picture – staffing costs - $0.041 cents per picture processed. (that’s 4.1 cents per picture processed.)



New Configuration: 3.28 seconds per picture – staffing costs - $0.018 cents per picture processed (that’s $1.8 cents per picture processed.)



Savings: 4.17 seconds per picture, staffing costs savings - $.023 cents per picture (that’s 2.3 cents per picture.)



Next, divide the price phelp for the memory - $292, by $0.023, and you reach at 12,696 pictures.



Reply: By spfinishing $292 on a memory upgrade, the cost of that upgrade is covered by a more productive post-production person after only, merely, solely 12,696 pictures.

For Extra Credit:

If I gun an average of 4 assignments a week, with a range of between 200 and 400 pictures per assignment, approxifriendly how long before I reach at that cost savings?



Demonstrate your work.

4 assignments a week averages 300 pictures per assignment, or 1,200 pictures per week.



Reply: By the eleventh week, the cost savings will be realized. Since a general calculation for businesses to make is to determine if an investment in plant or equipment will pay off in 18 months of less, this investment, which pays off in under 3 months was an apparent investment to make.

Now, look at your CPU speed - is it a dual G5? A Tunele G5? For you PC users out there - check your own speeds too. These type of investments clever really pay off. Here's Apple's calculator to look if you should upgrade: Apple Mac Productivity Calculator. When you go to that calculator, the number you'll necessity to tell is how many pictures you process in a day (on average is fine), and the amount of time each picture takes to process on your current machine, in seconds. Once you have these figures, multiply them, and divide by 60, to get the number of minutes each day you spfinish waiting around. For example, waiting 7.45 seconds per picture, procestune 1,000 pictures a day, is 124 minutes spent waiting around. Chootune the G5 Quad, Adobe Photostore, entering in 124 minutes into the "Estifriendd time you wait while utune the above application (minutes/day)" line, and then entering in $20/hour, and 1 workstation, results a savings each month of $164.92, and annually, a savings of $1979.09. Very interesting, indeed.

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