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What is DMA and what are its usage requirements?




DMA stands for Direct Memory Access. It is embedded within the Intel CPU low-level embedded framework protocol, allowing hardware devices of varying speeds to communicate freely.

DMA Mechanism:
DMA scans and transfers collected memory data from one address space to another. The scanning and transfer actions themselves are executed and completed by the DMA controller. DMA is legally permitted in computer embedded systems algorithms. Before purchasing and preparing to use the CAPTAINDMA Direct Memory Accessor, you should have some preliminary understanding and self-assessment of DMA devices, whether they can meet your work and entertainment needs.

Preparation before purchase:
The device requires two computers (desktop or laptop computers are acceptable). Recommended specifications for the main machine: CPU i5 9400F; DDR4 2133M16 G memory; 256G solid-state hard drive; graphics card 1060 6G or higher. Specific configurations depend on your individual needs.

Secondary machine:
CPU i3 4th generation or higher; DDR3 1333M8G memory; 120G solid-state drive. No specific requirements for the secondary machine's independent display output device are mentioned.

COMPUTER REQUIREMENTS FOR USING DMA

DMA is plugged into the motherboard of the computer you use to play games. You need your game console to have extra PCIE slots, which can be PCIE X1 X4 X8 X16.

Taking this motherboard as an example, the green slot and DMA use this interface, you can use PCIE X1 X4 X8 X16.

Red is the PCI slot, DMA cannot be used

How to distinguish these two types of slots depends on the fool-proof groove. The fool-proof groove of PCI-E is on the left side, and the slot of PCI is on the right side!

If your motherboard is a small board, plugging in the graphics card will block other PCIE slots. You can buy a PCIE extension cable on Taobao or Shopee to solve the problem!

PLUG DMA INTO LAPTOP GAMING COMPUTER

Hackdma comes with a USB data cable power supply mode. These two devices: M2 NVME connected to PCIE device and PCIE graphics card expansion island, there is no need to consider external power supply.

If you are not using HackDMA, you need to buy an external power supply, because these two devices are not powered by themselves and require external power supply, which is troublesome, and if the power supply is not connected properly, the device will be burned!

To use DMA on a laptop, you first need to be able to virtualize the BIOS and access and protect the DMA. You can check out the BIOS tutorial, which includes a tutorial on disabling BIOS and a tutorial on how to use HackDMA.

After confirming that virtualization and DMA internal protection can be turned off, you need to see if your laptop has extra M.2 hard drive slots. You can buy an M2 NVME adapter PCIE device on Taobao or Shopee. This device needs to be dismantled. PCIE backplane, and then connect some devices to it. The disadvantage of this kind of equipment is that it is cheap and requires the backplane to be removed.

 

If your laptop has a Thunderbolt 3/4 interface, you can use a PCIE expansion island and need to buy a Thunderbolt 3/4 data cable

The disadvantage is that the equipment is too expensive and the cheaper ones cost more than NT$2,000.

RADAR/AUXILIARY AIRCRAFT REQUIREMENTS

Minimum requirements: WIN10 is required, CPU I3 4th generation dual core 4 threads, memory RAM 8G, USB interface 3.0, the CPU can also be AMD

If you need a fusion device or streaming function, the radar machine needs to have a separate display, 960 level or better, and the graphics card can also be AMD.

For Direct Memory Access DMA technical support, Please contact us:steams360.com@gmail.com

The top NVIDIA Founders Edition and partner graphics cards for gamers

Why buy used NVIDIA Graphics Cards?


Graphics cards are crucial for computer gaming and video processing. They are responsible for rendering images and videos on a computer, enhancing and improving visual quality. They greatly improve the gaming experience.

NVIDIA GeForce GTX graphics cards provide the power needed for high-end gaming, such as the Pascal-based GeForce GTX 1080Ti with 8GB of GDDR5X memory, perfect for Virtual Reality (VR) and demanding gaming. Rendering with refurbished GeForce graphics cards offers serious performance utilizing CUDA cores packed inside, allowing you to get more done in mission-critical environments.

Why buy used graphics cards ?
We strive to earn and keep your trust. If we make a mistake, we'll make it right

We specialize in Nvidia Grade A+ / A used graphics cards for gaming. Engaging in long-term purchasing and recycling on a global scale from several suppliers, including gaming enthusiasts, we ensure they're still fully functional and their longevity hasn't been affected.We test each item intently and are yet to have a single return due to it not meeting the customer's expected standards!

*Proven Reliability
We only sell A+ class used hardware which has already proven itself to be reliable in a real-world game scenario and undergone extensive testing to ensure that it remains in perfect working order. The net effect of this in-situ usage and testing is hardware that is arguably more reliable than new systems, which don’t have anywhere near the same level of burn-in testing.

At steams360 store we firmly believe in the quality of our used products and as such, all of our quality tested, complete build to order systems are supplied with a 2 year return to base warranty as standard.

*Unbeatable Value
Buying refurbished graphics cards will save you anywhere from 30% to 50% off the list price of a new one, allowing you to upgrade for less.Choose us for a cost-effective solution, with quick worldwide shipping, dedicated customer support, and warranty included.

Used NVIDIA Graphics Card Testing Standards >

steams360 Verified - Excellent condition, working perfectly and an absolute beauty!

steams360 Verified is our own designation and means that we inspect every item, every time.

The grading guide of the highest standard for Refurbished NVIDIA Graphics Cards

We categorize by two grades: A+ and A. We do so because we believe that our A+ grade is superior to the industry standard ‘A’ grade.Both grades provide fully functional, tested systems. The difference between different levels lies in the registration and usage time of the original user. We thoroughly believe in honesty and transparency with our customers, and this standard is aimed to provide a comprehensive overview of the physical condition of the goods you are purchasing.

Grade A+ standard

Excellent condition, working perfectly and an absolute beauty! Highly powerful card, with the original box.

* The production date of the graphics card is within 1 year (verified by the SN on the card through official Nvidia authentication), and it has been used by a personal user for less than 1 year.
* All test functions are normal.
* The appearance is 98% new, with no dents/scratches.
* No disassembly, no repairs, no hidden issues.

Grade A  standard
Excellent condition, working perfectly and an absolute beauty! Highly powerful card, with the original box.

* The production date of the graphics card is within 2 year (verified by the SN on the card through official Nvidia authentication), and it has been used by a personal user for less than 18 months.
All test functions are normal.
The appearance is 95% new, with no dents/scratches.
No disassembly, no repairs, no hidden issues.


Used NVIDIA Graphics Card Testing Standards >

Used NVIDIA Graphics Card Testing Standards

 Disassembled RTX 3090 showing GDDR6 memory

Introduction:
steams360 specializes in selling used NVIDIA graphics cards. We understand the importance of providing high-quality products to our customers. To ensure customer satisfaction and trust in our products, we have established strict testing standards for our used NVIDIA graphics cards. These standards cover both physical inspections and software testing procedures to ensure the reliability and performance of our products.

I. Physical Inspection

Visual Inspection:

Thoroughly inspect the surface of the graphics card for any signs of damage, including scratches, dents, or corrosion.

印刷电路板

Connectors and Ports Inspection:
Verify the integrity of all connectors and ports, ensuring they are undamaged, properly aligned, and securely fitted without any bends or misalignments.

Fan Functionality:
Check the fan(s) to ensure they are operating smoothly without any unusual noises, as excessive noise or vibrations may indicate issues with the cooling system.
GPU风扇

Temperature and Overheating:
Examine the graphics card components for signs of overheating such as discoloration or burn marks.

History Information:
Inquire with the seller about the card's history, including its usage duration and any modifications or overclocking.


II. Software Testing

Benchmark Testing Software:
In addition to conventional benchmarks like 3DMark and FurMark, we use other specialized benchmarking software such as Unigine Superposition and Cinebench to cover a wider range of performance testing scenarios.

3Dmark-stress-test-windows

Graphics-Intensive Applications:
Run various graphics-intensive applications and games to evaluate performance and identify issues like artifacts, screen tearing, crashes, or performance drops. We simulate different usage scenarios including high-resolution video rendering, virtual reality (VR) gaming, and machine learning applications to ensure stability and performance.
《Apex 英雄》中的 GPU 神器

Temperature Monitoring:
Utilize software tools like MSI Afterburner or HWMonitor to monitor the graphics card temperature and ensure it remains within safe operating limits during use.

Stability Testing:
Conduct prolonged stability tests by continuously running benchmarking software or graphics-intensive applications to ensure the card's stability and reliability under extended loads. We pay particular attention to any crashes, freezes, or performance degradation.

Compatibility Testing:
Test the card's compatibility with various operating systems and hardware configurations, including different versions of Windows, Linux, and macOS, to ensure it functions properly in diverse environments.

Power Management and Power Consumption Testing:
Monitor the card's power consumption levels and power management features under different loads. We check if the card meets energy efficiency standards and performs well in terms of power consumption.

Error Detection and Reporting:
Utilize professional error detection tools like MemTest and Prime95 to identify any hardware errors or faults in the graphics card. We meticulously document and report any detected issues for further analysis and resolution.

Testing the Card's Age:
Model and Release Date Verification: Verify the card's model and original user registration date to determine its age and potential compatibility with newer software and hardware.

Condition Assessment:
Evaluate the card's physical condition, taking into account factors such as wear and tear, maintenance, and responsible usage.

Warranty Status:
Check the card's warranty status, as cards still under warranty may indicate relatively newer and well-maintained units.

BIOS Date:
Inspect the card's BIOS date as another reference point to determine its manufacturing date.


By adhering to these comprehensive testing standards, our company ensures that every used NVIDIA graphics card meets stringent quality criteria before being delivered to customers. We aim to provide reliable, high-performance graphics cards that meet our customers' computing needs, thereby fostering confidence and trust in our products.



The grading guide of the highest standard for Refurbished NVIDIA Graphics Cards
We categorize by two grades: A+ and A. We do so because we believe that our A+ grade is superior to the industry standard ‘A’ grade.Both grades provide fully functional, tested systems. The difference between different grades lies in the production date of the graphics card and the duration of personal user usage. We thoroughly believe in honesty and transparency with our customers, and this standard is aimed to provide a comprehensive overview of the physical condition of the goods you are purchasing.

Grade A+ standard

Excellent condition, working perfectly and an absolute beauty! Highly powerful card, with the original box.

* The production date of the graphics card is within 1 year (verified by the SN on the card through official Nvidia authentication), and it has been used by a personal user for less than 1 year.
* All test functions are normal.
* The appearance is 98% new, with no dents/scratches.
* No disassembly, no repairs, no hidden issues.

Grade A  standard
Excellent condition, working perfectly and an absolute beauty! Highly powerful card, with the original box.

* The production date of the graphics card is within 2 year (verified by the SN on the card through official Nvidia authentication), and it has been used by a personal user for less than 18 months.
All test functions are normal.
The appearance is 95% new, with no dents/scratches.
No disassembly, no repairs, no hidden issues.

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