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Asus Does Super ML Caps for Overclocking
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Asus released two graphics cards that utilize Super ML Caps for higher GPU overclocking and 15°C cooler GPU temperatures.
This morning, Asus said that two new graphics cards, the ENGTX285 (Nvidia GeForce GTZ285) and the EAH4890 (ATI Radeon HD 4890), will be equipped with Super ML Caps, making them the industry first to utilize these polymer-based capacitors. This means that users are able to crank up the ENGTX285 Series GPU 3.3 times the normal overclocking margins while remaining up to 15°C cooler than reference GTX285 GPU offerings. Additionally, the EAH4890--also featuring Asus' Voltage Tweak Technology and a special fansink--doesn't see the same performance boost as the Nvidia-based card, only offering 3 times the GPU overclocking margins and 10°C cooler GPU temperatures than other HD 4890 cards.
Super ML Caps, a shorter term for Multilayer Polymer Capacitors, offer many advantages over ceramic capacitors. Super ML Caps remain stable under regular and AC voltage, doesn't have an aging mechanism, and is resilient under thermal shock. Made up of plastic with a good thermal coefficient of expansion (meaning they won't expand like ceramic capacitors), these capacitors are not only low in cost, but offer an extremely low equivalent series resistance due to the source material. Ceramic capacitors, on the other hand, tend to crack easily, are sensitive to piezoelectric voltage, and uses precious metal electrodes that have a higher electrical resistance.
With the use of these Super ML Caps, consumers can actually push the card harder because they are more likely to overheat less than cards using standard ceramic capacitors, thus remaining extremely stable. The cards should last longer because the Super ML Caps expand and contract less; the ESR also enable higher ripple current with better power efficiency to help lower the temperature of the GPU and memory modules (up to 15°C and 8°C respectively on ENGTX285). The low height of the Super ML Caps enable them to be closer to the GPU without interfering with the heatsink, allowing faster responses with a reduced lower voltage noise. Additionally, with the inclusion of the EMI Shield, covered chokes, and low RDS(on) MOSFETs, users can achieve extreme performances while "enjoying total peace of mind."
"With the Super ML Cap present on the ENGTX285 Series, the overclocking limits of the GPU/shader/memory clock can be dramatically boosted from 670/1550/2700 MHz up to 720/1656/2920 MHz--an astonishing 3.3 times in terms of GPU overclocking margin," the company said. These numbers are already increased from the default core numbers, boosted from 648MHz up to 670 MHz, 1476 MHz to 1550 MHz, and 2484 MHz to 2600 MHz respectively, a 108-percent increase before overclocking.
On the EAH4890 series, users can manipulate the card's voltage using the built-in Voltage Tweak technology. Users can actually boost GPU voltages from 1.321V up to 1.4V with just "a few clicks" in the SmartDoctor application. According to the company, the card's overclocking limits of the GPU/memory clock can be dramatically boosted from 900/4000 MHz up to 1000/4800 MHz. It also features a special fansink that offers six 230 mm heatpipes; this, along with the low ESR of the Super ML Caps, keeps it 10°C cooler than reference HD 4890 boards. As with the ENGTX285, the default core is increased 108-percent before overclocking, its default core and memory clock performances elevated from 850MHz up to 900MHz and 3900MHz to 4000 MHz.
To learn more about each card's individual specifications, head over to the official Asus website for a larger specification sheet.
Source : Tom's Hardware US
- Asus 4890 Super ML Cap can't run Furmark. [Graphic & Displays]
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When are they going to release HD5870's? I am waiting with a wad of cash.
Always nice to have more tweaking headspace... These sound like a worthwhile upgrade to thet board designs. In another couple of years when my SLI system no longer cuts it, I bet these will be industry standard...
because "they are more likely to overheat less"... how about just, "less likely to overheat". Must get paid by the word.
because "they are more likely to overheat less"... how about just, "less likely to overheat". Must get paid by the word.
Look out everyone, Captain Grammar has entered the room
shoot im poor they need to release somthin like this for like the 9800GTX + but class of the future replacement of the 9800
I'm not sure they would be worth the price premium i bet Asus is going to be putting on them, but they will eventually be industry standard like jeraldjunk said. Then everyone can afford them.
"...these capacitors are not only low in cost, but offer an extremely low equivalent series resistance due to the source material."
If that is true, then they should become standard soon enough.
maybe they don't cost very much to make, but maybe the development was costly. you can bet that there will be some sort of premium, at least for a while.
Did I cream my pants? Nope, almost.
Aren't people already reaching 1000GHz on the 4890? What can these babes be overclocked to without budget and sensibility in mind?
What disadvantages do these polymer caps have?
Can I have one?
Benches coming soon please?
Isn't 3.x times overclocking like 300.x% times overcloking?. Maybe Parrish means 30%
He said 3.3 times the standard overclocking margin. So if you were able to acheive a 50 MHz overclock before, it would now be a ~175 MHz OC.
Usually, polymer caps replace electrolytic, no ceramic caps. Ceramic capacitor's capacity range is lower than 10 uf (and usually much lower than that). SMPS in either video cards or MoBo use several caps in the order of 1000 uf, usually electrolytic with low ESR. But electrolytic have a very limited lifetime (even worse considering the low quality components that are used). Solid polymer capacitors have a MTTF of about 600.000 hours @ 65C, so they will last as long as the board.
This whole text looks like commercial from Asus.
yeah, the guys from Asus has a very bad math
850Mhz X 3.3 = 2805 Mhz not 1000Mhz! Also, we already seen "cheap" brands HD4890 to exceed 1000Mhz!
I don't know why they putting such numbers like 3.3 times overclock and 108% and they still not offering something new. This seems like an advertize that will "explain" why their cards are UNreasonably priced.
What I'm trying to say is we already seen GTX285 at 720Mhz and HD4890 at 1000+Mhz.
Q: What the hell are the point of this capacitors?
A: To give asus a reason to rob us.
This article says ML caps are cheaper to use, then why aren't they saying it's going to be used for all video cards toreduce costs across the board? Why is it that only the GTX 285 is mentioned?
This reads like an advertisement. It might be nice for you to put these claims to the test, rather than dumbly repeating what Asus marketing department sent you.
if the plastic melts, you'll really see some hot burnin' graphics cards!
Sounds good, I guess. Now when the 5870 comes out if ASUS puts out a republic of gamers card with these capacitors, then I'll be interested. My two trusty 3850s will just have to hold out till then
.
If the price premium is only about $20-50 then I would consider this.
yeah, the guys from Asus has a very bad math 850Mhz X 3.3 = 2805 Mhz not 1000Mhz! Also, we already seen "cheap" brands HD4890 to exceed 1000Mhz! I don't know why they putting such numbers like 3.3 times overclock and 108% and they still not offering something new. This seems like an advertize that will "explain" why their cards are UNreasonably priced.What I'm trying to say is we already seen GTX285 at 720Mhz and HD4890 at 1000+Mhz.Q: What the hell are the point of this capacitors?A: To give asus a reason to rob us.
Your reading comprehension is sub-zero. Which part of the 3.3 times the standard overclock MARGINS didn't you understand?
yeah, I realyzed that later.
but anyway, OCing 4890 to 1000Mhz is not impresive, nor OCing GTX285 to 720Mhz.
My point was how this "new" caps are better than the "old" ones, because we already seen better OC without these "new" caps.
My guess is they're talking about releasing parts from the factory with these overclocks, home users might be able to push them even further.
"these capacitors are not only low in cost"
I hope that means the cards would be cheaper than the older ones
108% increase should be 8% increase. Although 108% increase would be pretty sweet...
"these capacitors are not only low in cost"I hope that means the cards would be cheaper than the older ones
Of course not. Manufacturers just increase their profit margins.
When Atom was announced, they said it will be extremely low cost, but still you have to shell 300$ if you want a mainboard with the "cheap" cpu.
OLED was also supposed to be cheap... to produce or something.
So, low cost means just that, cheap to make; the price we pay for it will always be set by offer/demand ratio.
pitty the most common cause of death in video cards is memory or the gpu contacts breaking causing artifacting and eventually death
wonder how much $$$ ASUS paid to place there add here
"the default core is increased 108-percent before overclocking"
---is it just me or is this statement misleading? why not just say increased by 8%? oh wait, thats because 108% looks more impressive albeit misleading
marketing, marketing. i'd be happy if they stated that an actual price reduction will happen because of this
There are a few errors in this report, though I'm sure the marketing dept. is to blame rather than the author.
The advantage of Super ML caps is it's higher capacitance density while retaining very low ESR. That's pretty much it. Now dispelling the rest.
Ceramic caps also remain stable under regular and AC voltage, they do not significantly age within the lifespan of the product (or 5X it), and we don't see them cracking from high thermal shock in normal situations, in fact ceramic caps are put right on the CPU and GPU carrier, because it and chipsets on mainboards, and other areas where heat resistance is desired and liquid electrolytic wouldn't survive as well as behing too high in esr and impedance at high frequency.
There is no significant generation of piezoelectric voltage in the computer circuits they're used on, they are not timing caps needing exact values and it's a pulsed switching circuit in the first place. If the claims were true then Asus themselves wouldn't be using such *problematic* ceramic capacitors on almost everything they build, if not everything.
It's mostly gobbledegook, the high capacitance and low ESR in a flat form factor allows it to be placed closer to the powered part when that part has a heatsink, compared to the height of a solid or electrolytic capacitor, reducing impedance between capacitor and powered part. This is a desirable thing, this may improve overclocking, but they went off the deep end of the BS pool when they knocked ceramic capacitors trying to make it seem like this is revolutionary.
Anybody can make a short polymer capacitor. Give Asus engineers credit for seeing a good use for them, but their deceptive marketing is a stain on their honor.