Welcome to a Laptop AC Adapter specialist of the Msi Ac Adapter
Earlier this month MSI launched the companies AMD Radeon HD 7970 based Lightning series video card, the R7970 Lightning. The MSI Lightning series takes high-end graphics cards and turns them into monsters with custom PCB designs as well as GPU coolers and then includes top-quality components that increase the cards stability and endurance, making it ideal for overclocking purposes. When AMD first released the AMD Radeon HD 7970 3GB video card in December 2011 we were impressed with the card with the stock cooler and the 925MHz core and 1375 MHz (5500 MHz effective) GDDR5 memory clock speeds. The MSI R7970 Lightning might be three months late to the game, but this card might be worth the wait for AMD fans that didn't want to buy the reference design. The MSI R7970 Lightning is clocked at 1070 MHz on the core and 1400 MHz on the memory (5600 MHz effective). This is an impressive 15.7% clock increase on the core and a mediocre 1.8% on the memory.
Looking at the front of the MSI R7970 with battery like Averatec 1020 90W Ac Adapter , Averatec 5200 90W Ac Adapter , LG P300 90W Ac Adapter , LG M1 Ac Adapter , LG LW60 Ac Adapter , LG R200 Ac Adapter , LG W1 Ac Adapter , MSI M510 Ac Adapter , MSI PR620 Ac Adapter , MSI VR610 Ac Adapter , MSI X480 Ac Adapter , MSI S250 Ac Adapter Lightning graphics card you'll see a video card that looks nothing like the AMD Radeon HD 7970 reference design. MSI engineers came up with their own PCB design and GPU cooling solution for this card, so it has been designed from the ground up to be more robust. MSI has included Military Class III components on it along with the Twin Frozr IV dual-fan cooler. On the custom PCB, MSI beefed up the power design to a 14+2+1 Phase PWM solution! With a 17 phase PWM design and a digital PWM controller, the MSI R7970 Lightning can offer more current output to the GPU and memory to ensure. On top of that MSI allows for the voltage adjustment of the GPU, Memory and the PCIe slot with the MSI Afterburner utility. MSI has done a number of things to make this card stand out from the crowd!
The MSI R7970 Lightning graphics card sports a black and yellow fan shroud that helps give it an aggressive look. The PCB of the card measures 11-inches in length and stands at 4.75-inches in height. It should be noted that the metal fan shroud extends past the PCB, so the true length of the card is ~11.75" in length and the height of the card up to ~5" in height.
The fan blades have air channels located along the the edge of the fan blades that help increase the surface area. MSI says that this adjustment increased airflow by 20% compared to conventional fan. MSI also uses dust removal technology with the Twin Frozr IV, which means that when you turn the system on the fans spin in reverse for 30 seconds to blow the dust out and then return to the regular spinning direction.
If you look closely at the 10cm PWM fan in the image above you'll see a small green LED light diode between the fan blades. Each fan has a single blue LED light that is on when the card is running.
The Twin Frozr IV GPU cooler uses also has a large nickel-plated copper heatsink base and five large heat pipes to help to dissipate heat rapidly away from the GPU. Notice that two of the heat pipes are 8mm thick and the three inner heat pipes are 6 mm thick. Also, two of the heat pipes go up and then down into the cooling fin array, while the other three go down and then turn back up into the cooling fins. MSI has heat pipes going in all directions!
Here is a slide that MSI provided on the Twin Frozr IV cooling solution.
Turning the MSI R7970 Lightning video card over we find that MSI is using a very nice metal backplate and we see a weird looking blue and silver plastic cap over the back of the GPU. The serial number sticker is also located on the back of the R7970 Lightning on the backplate, so if you take it off be sure you don't lose it!
The MSI R7970 Lightning has a feature called GPU Reactor, which is located under that blue and silver plastic cap that easily pops off the back of the card. The GPU Reactor is designed to supply extra GPU power for maximum overclocking stability. It also helps to eliminate GPU power noise (ripple) and already installed when you buy a R7970 Lightning card. The image above shows what the GPU Reactor PCB looks like and as you can see it has eight tantalum capacitors on it with a power feed on the going into the side of the PCB.
If you don't want to use the GPU Reactor you can simply unplug it and not use it. When we first got the MSI R7970 Lightning we thought this was nothing more than a marketing gimmick and something that could have been placed on the PCB rather than a daughter PCB card. We reached out to MSI to get a comment on the GPU Reactor and why it wasn't placed on the PCB to begin with.
"The GPU reactor is meant to be an add-on board that provides additional power to the GPU for extreme overclocking such as LN2. We could have just added it on the regular PCB, but as you may notice, the PCB is already overcrowded with the existing amount of power phases thrown on. So to answer your question: this was the best way to add additional power circuitry to the card, without making the card absurdly large (i.e. keeping it within a 2-slot design). Thus, the decision was made to have it as an add-on PCB for LN2 overclocking, and for regular usage (especially SLI configurations) the user can remove it to prevent the card from taking up 3 slots. I hope this answers your question on that. For regular overclocking on air, the GPU reactor is not needed to achieve maximum OC, but it most certainly does not hurt..." - MSI USA
As you can see if you only plan on air cooling this is a pointless feature, but would help those that plan on overclocking with sub-zero cooling methods like LN2. We measured and found that MSI is using standard 53mm mounting holes, so if you plan on changing the GPU cooler or adding a water block at a later date you can easily do so and this is the dimension you need to be concerned with.
Along the top edge of the MSI R7970 Lightning you'll find three voltage check points that you can plug your volt meter directly into to get accurate readings. From left to right you have the V-GPU, V-MEM and V-VDDCI check points. You can adjust the GPU, Memory and VDDCI voltage settings in afterburner and then check the readings here without having to do any hard mods on the PCB itself! The MSI Afterburner utility also shows the temperature of the GPU, Memory and VRM (MOSFET) in the utility.