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Maingear MG-1 (i9-14900KS / RTX 4090 / 64GB RAM / 4TB SSD) specifications and in-depth review

Maingear MG-1 (i9-14900KS / RTX 4090 / 64GB RAM / 4TB SSD)

Manufacturer: Maingear

The Maingear MG-1 is a desktop gaming PC built around Intel's i9-14900KS processor and NVIDIA's RTX 4090 graphics card. Housed in an ATX form factor with dimensions of 482.6 mm x 205.7 mm x 428.7 mm, the system ships with 64GB of DDR5 RAM running at 6000 MHz across two memory slots, alongside a 4TB NVMe SSD for fast, high-capacity storage. Connectivity options include Wi-Fi 6, Bluetooth, a single RJ45 Ethernet port, and a mix of USB 3.2 Gen 1 and Gen 2 ports.

The RTX 4090 GPU is built on NVIDIA's Ada Lovelace architecture and delivers 82.58 TFLOPS of floating-point performance with 24GB of GDDR6X memory on a 384-bit bus, an effective memory speed of 21200 MHz, and a texture rate of 1290 GTexels/s. It supports ray tracing, DLSS, DirectX 12, and up to four simultaneous displays via three DisplayPort outputs and one HDMI 2.1 port. The i9-14900KS CPU features 32 threads, a turbo clock speed of 6.2 GHz, 32MB of L2 cache, and 36MB of L3 cache, with a PassMark score of 60,550 and an overclocked result reaching 66,000.

Pros
  • The RTX 4090 GPU delivers 82.58 TFLOPS of floating-point performance with 24GB of GDDR6X VRAM on a 384-bit bus, making it well-suited for demanding rendering and computational workloads
  • Support for ray tracing, DLSS, and up to four simultaneous displays provides broad flexibility for multi-monitor setups
  • The i9-14900KS processor offers 32 threads, a 6.2 GHz turbo clock, and an unlocked multiplier, giving users the option to adjust frequencies manually
  • 64GB of DDR5 RAM running at 6000 MHz across two slots provides substantial bandwidth for memory-intensive tasks
  • A 4TB NVMe SSD using flash storage offers both large capacity and fast data access in a single drive
  • Wi-Fi 6 support alongside a wired RJ45 port means the system can handle both wireless and Ethernet connections
Cons
  • With only two memory slots, expanding beyond the current configuration is limited to higher-capacity modules rather than adding more sticks
  • The maximum supported RAM speed is listed as 5600 MHz, while the installed RAM runs at 6000 MHz, suggesting the CPU officially supports a lower ceiling than the installed kit
  • There are no USB-C Gen 2, USB 4, or Thunderbolt ports of any kind, which restricts compatibility with newer high-speed peripherals and docking solutions
  • Air-water cooling is not included, which may be a consideration given the 150W TDP of the CPU and the thermal demands of the overall configuration
  • The absence of an external memory card slot limits direct media transfer options
Who is this for?

This system is well-matched for users who regularly engage in high-resolution 3D rendering, game development, or GPU-accelerated computing, given the RTX 4090's 82.58 TFLOPS of floating-point performance, ray tracing support, and 24GB of GDDR6X VRAM. The 32-thread i9-14900KS with a 6.2 GHz turbo clock and 64GB of DDR5 RAM at 6000 MHz makes it equally capable of handling heavily threaded CPU workloads such as video encoding, simulation, and large dataset processing. The four-display output support and DLSS capability also make it a strong fit for users running multi-monitor setups or working with real-time visual applications that benefit from AI-assisted rendering.

Who is this NOT for?

Users who need a compact or easily transportable workstation will find the ATX form factor and 42,557 cm³ volume impractical, as the system is designed strictly for stationary desktop use. Those requiring high-speed USB-C or Thunderbolt connectivity for modern peripherals, external GPUs, or advanced docking solutions will encounter limitations, since the machine lacks USB 4, Thunderbolt 3, Thunderbolt 4, and USB 3.2 Gen 2 Type-C ports entirely. Additionally, users who anticipate needing to expand system memory incrementally may find the two-slot configuration restrictive, as any RAM upgrade requires replacing existing modules rather than simply adding to them.

General info:

SSD storage capacity 4000GB
form factor ATX
Is an NVMe SSD ✓
Uses flash storage ✓
volume 42557.400534 cm³
thickness 428.7 mm
height 482.6 mm
width 205.7 mm

The Maingear MG-1 follows an ATX form factor with a height of 482.6 mm, a width of 205.7 mm, and a depth of 428.7 mm, yielding a total volume of approximately 42,557 cm³. Storage is handled by a 4TB NVMe SSD that uses flash memory, offering fast read and write speeds typical of the NVMe interface.

Graphics card:

VRAM 24GB
floating-point performance 82.58 TFLOPS
effective memory speed 21200 MHz
GPU clock speed 300 MHz
GPU memory speed 1325 MHz
GPU turbo 1650 MHz
GDDR version GDDR6X
DirectX version DirectX 12
PCI Express (PCIe) version 5
supports ray tracing ✓
texture rate 1290 GTexels/s
pixel rate 443.5 GPixel/s
maximum memory bandwidth 89.6 GB/s
memory bus width 384-bit
supports DLSS ✓
supported displays 4
semiconductor size 10 nm
texture mapping units (TMUs) 16
shading units 256
render output units (ROPs) 8
OpenGL version 4.5
OpenCL version 3
has LHR ✕
Supports multi-display technology ✓
Has Double Precision Floating Point (DPFP) ✓
Supports 3D ✓
has RGB lighting ✕
number of transistors 76300 million

The graphics card carries 24GB of GDDR6X VRAM on a 384-bit memory bus, with a GPU memory speed of 1325 MHz and an effective memory speed of 21200 MHz, delivering a maximum memory bandwidth of 89.6 GB/s. Floating-point performance reaches 82.58 TFLOPS, supported by a texture rate of 1290 GTexels/s and a pixel rate of 443.5 GPixel/s, with 16 texture mapping units, 256 shading units, and 8 render output units. The base GPU clock runs at 300 MHz with a turbo frequency of 1650 MHz, and the card is built on a 10 nm process housing 76,300 million transistors. It connects via PCIe 5, supports DirectX 12, OpenGL 4.5, and OpenCL 3, and is compatible with up to four displays simultaneously through its multi-display support. Ray tracing, DLSS, double precision floating point, and stereoscopic 3D are all supported, while LHR and RGB lighting are not present.

CPU:

CPU speed 8 x 3.2 & 16 x 2.4 GHz
Has integrated graphics ✓
Has an unlocked multiplier ✓
L2 cache 32 MB
L3 cache 36 MB
turbo clock speed 6.2GHz
CPU threads 32 threads
uses multithreading ✓
Turbo Boost version 2
clock multiplier 32
Supports 64-bit ✓
CPU temperature 100 °C

The CPU operates with 8 cores running at 3.2 GHz and 16 cores at 2.4 GHz, scaling up to a turbo clock speed of 6.2 GHz via Turbo Boost version 2, with a clock multiplier of 32. It supports 32 threads through multithreading and is fully 64-bit compatible, while also featuring an unlocked multiplier for manual frequency adjustments. Cache memory consists of 32 MB of L2 and 36 MB of L3, and the processor includes integrated graphics. The maximum rated CPU temperature is 100 °C.

Benchmarks:

Geekbench 6 result (multi) 23839
Geekbench 6 result (single) 3341
PassMark (G3D) result 39312
PassMark result 60550
PassMark result (single) 4828
PassMark result (overclocked) 66000
Cinebench R20 (single) result 909
Cinebench R20 (multi) result 15599
PassMark (DirectCompute) result 31988

In CPU benchmarks, the system scores 23,839 in Geekbench 6 multi-core and 3,341 in the single-core test, while Cinebench R20 returns 15,599 in the multi-core run and 909 in the single-core result. The overall PassMark score reaches 60,550, with a single-core PassMark of 4,828 and an overclocked result of 66,000. On the graphics side, the PassMark G3D test yields 39,312, and the PassMark DirectCompute result stands at 31,988.

Memory:

RAM 64GB
RAM speed 6000 MHz
DDR memory version 5
memory slots 2

The system is equipped with 64GB of DDR5 RAM running at 6000 MHz, spread across two memory slots.

Connectivity:

Wi-Fi version Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
supports Wi-Fi ✓
USB 2.0 ports 2
USB 3.2 Gen 2 ports (USB-A) 2
USB 3.2 Gen 1 ports (USB-A) 4
USB 3.2 Gen 2 ports (USB-C) 0
USB 4 40Gbps ports 0
USB 4 20Gbps ports 0
USB 3.2 Gen 2x2 ports 0
USB 3.2 Gen 1 ports (USB-C) 1
RJ45 ports 1
Thunderbolt 4 ports 0
Thunderbolt 3 ports 0
DisplayPort outputs 3
HDMI version HDMI 2.1
HDMI ports 1
Has Bluetooth ✓
has an external memory slot ✕
DVI outputs 0
Has S/PDIF Out port ✓
has a socket for a 3.5 mm audio jack ✓
has a VGA connector ✕

Wireless connectivity is handled by Wi-Fi 6 (802.11ax) with backward compatibility for Wi-Fi 5 and Wi-Fi 4, alongside built-in Bluetooth. For wired networking, a single RJ45 port is available. The USB port selection includes 2 USB 2.0 ports, 4 USB 3.2 Gen 1 Type-A ports, 2 USB 3.2 Gen 2 Type-A ports, and 1 USB 3.2 Gen 1 Type-C port; there are no USB 3.2 Gen 2 Type-C, USB 3.2 Gen 2x2, USB 4, Thunderbolt 3, or Thunderbolt 4 ports. Display output is covered by 3 DisplayPort outputs and 1 HDMI 2.1 port, with no DVI or VGA connectors present. Audio connections include a 3.5 mm headset jack and an S/PDIF output, while an external memory slot is not included.

Miscellaneous:

has an HDMI output ✓
GPU name UHD Graphics 770
Type Desktop
chipset B760, Z690, Z790, B660
CPU socket LGA 1700
instruction sets MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2
Has NX bit ✓
GPU execution units 32
Supports ECC memory ✓
memory channels 2
RAM speed (max) 5600 MHz
maximum memory amount 192GB
Thermal Design Power (TDP) 150W
Uses big.LITTLE technology ✓
USB-C ports 0
Has air-water cooling ✕
mini DisplayPort outputs 0
has XeSS (XMX) ✕
GPU architecture Ada Lovelace

The desktop CPU uses an LGA 1700 socket and is compatible with B760, Z690, Z790, and B660 chipsets, with a Thermal Design Power of 150W and support for big.LITTLE technology. It operates across two memory channels, supports ECC memory, and can address up to 192GB of RAM at a maximum speed of 5600 MHz. The processor supports a range of instruction sets including MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2, and includes the NX bit for hardware-level security. The integrated GPU is the UHD Graphics 770, built on the Ada Lovelace architecture with 32 execution units, and the system provides an HDMI output; there are no USB-C ports, no mini DisplayPort outputs, no air-water cooling, and XeSS (XMX) is not supported.

Final Verdict

The Maingear MG-1 (i9-14900KS / RTX 4090 / 64GB RAM / 4TB SSD) is a purpose-built desktop workstation that leaves little doubt about its intended role. Anchored by the RTX 4090's 82.58 TFLOPS of floating-point performance and complemented by a 32-thread i9-14900KS running up to 6.2 GHz, the system is configured to handle sustained, demanding workloads across both GPU and CPU-intensive applications. The 64GB of DDR5 RAM, 4TB NVMe storage, and multi-display output support round out a specification set that prioritizes capability and throughput above all else. Its ATX footprint and limited USB-C ecosystem mean it is firmly a stationary solution with some connectivity constraints, but for users whose workflows align with what this hardware is built to deliver, the Maingear MG-1 represents a well-assembled, high-specification desktop configuration.