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Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Colorful’s iGame GeForce RTX 4070 Neptune OC-V was described as the world’s first liquid-cooled GeForce RTX 4070 when it launched in May 2023. It paired NVIDIA’s 5,888-CUDA-core RTX 4070 with a factory-installed 240mm all-in-one cooler—but its $829 launch price was $230 above the standard RTX 4070 and even exceeded the RTX 4070 Ti’s $799.99 starting price.
What was the liquid-cooled RTX 4070?
The headline referred to Colorful’s iGame GeForce RTX 4070 Neptune OC-V, sometimes shortened in coverage to “Neptune OC.” Colorful introduced it around May 1–2, 2023, as part of its broader RTX 4070 lineup, alongside air-cooled cards such as the Vulcan, Advanced, Ultra W and NB EX models. Colorful’s launch announcement listed the Neptune’s $829 price and 240mm liquid cooler.
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This was a factory-assembled closed-loop graphics card—not a normal card with a water block intended for connection to a user-built custom loop. The slim, two-slot GPU section connected by tubing to a 240mm radiator and two radiator fans. The liquid-cooling assembly covered the GPU, memory and VRM power-delivery components.
The arrangement could make the card itself easier to fit than a bulky triple-fan air cooler, but it did not eliminate space requirements. Buyers still needed a case with a compatible 240mm radiator mount, suitable radiator and fan clearance, and enough room for the tubing.
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- NVIDIA GeForce RTX 4070 Ti, 3x Display Port/1x HDMI
- Closed Loop Liquid Cooling with 360mm Radiator
- 1x USB 3.0, 2x USB 2.0, 1x Headphone, 1x Mic Ports
- PSU Power cover with Filtered Ventilated Vertical Side mount Radiator support
Colorful RTX 4070 Neptune OC-V specifications
| Specification | Detail |
|---|---|
| Architecture | NVIDIA Ada Lovelace |
| GPU | AD104-250, according to launch reporting |
| CUDA cores | 5,888 |
| Memory | 12GB GDDR6X |
| Memory interface | 192-bit |
| Base clock | 1,920MHz |
| Standard boost clock | 2,475MHz |
| One-button OC clock | Up to 2,640MHz |
| Power figure cited in launch coverage | 230W power target |
| Cooler | 240mm AIO liquid cooler |
| Card dimensions | 253.5 × 170.8 × 41.5mm, excluding radiator |
| Power connector | 16-pin |
| Launch price | $829 |
The core specifications match the RTX 4070 family described by NVIDIA. Specialist reporting also identified a 14+3-phase power design and the AD104-250 GPU. The standard RTX 4070 launched with a 200W total graphics power figure, so the Neptune’s cited 230W target gave its custom cooling and power circuitry more room for higher clocks.
The $829 price was the real story
NVIDIA launched the GeForce RTX 4070 at $599 on April 13, 2023, according to NVIDIA’s announcement. Colorful’s Neptune OC-V therefore carried a $230 premium, or roughly 38% more than the baseline card.
That comparison would already have made the Neptune an expensive RTX 4070. The bigger problem was its position against the next model up: the RTX 4070 Ti started at $799.99. In other words, the liquid-cooled RTX 4070 launched $29.01 above a substantially faster GPU tier.
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- NVIDIA GeForce RTX 4070 SUPER 12GB GDDR6X Graphics Card (1x HDMI, 3x DisplayPort), 4-Monitor Support, Nahimic Audio for Gamers
- Wi-Fi 6E 802.11AX (2 x 2) + Bluetooth 5.3, 2.5G Gigabit Ethernet (RJ45), 1x USB-C 3.2 Gen 2, 7x USB-A 3.2, 4x USB-A 2.0, 6 x Audio I/O, 1x Headphone / mic combo
- 2-Year Warranty by Techno Intelligence & Free Tech Support, USB Calliope Black Keyboard & Mouse Included, Quick Start Guide, Storm Grey
What liquid cooling could—and could not—do
A 240mm radiator was intended to move heat away from the GPU more effectively than a conventional compact cooler. In principle, that can provide lower temperatures, reduced fan stress, and more thermal headroom during sustained workloads or overclocking.
However, the launch reports establish the cooling design and advertised settings—not a verified temperature, noise or gaming-performance advantage over a particular air-cooled RTX 4070. It would be inaccurate to claim that the Neptune was a fixed number of degrees cooler, quieter than every air-cooled model, or guaranteed to overclock better.
The clearest distinction is between thermals and performance tier. Liquid cooling can help a GPU maintain clocks or operate with less cooling noise, but it does not change the underlying silicon. The Neptune could be an interesting enthusiast RTX 4070; it was not a faster class of GPU simply because it used water cooling.
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Installation was more complicated than with a normal RTX 4070
Before buying one, an owner would need to check:
- Whether the case has an unused, compatible 240mm radiator position.
- Radiator and fan thickness clearance, including interference with the motherboard or memory.
- Whether the tubing can reach the GPU without sharp bends or unwanted pressure.
- Power-supply compatibility with the 16-pin connector and any included adapter.
- Airflow through the radiator and the case’s overall fan layout.
- Warranty coverage and regional support, especially if the card is imported.
The integrated pump and liquid loop also add components that a conventional air-cooled card does not have. That does not make the design inherently unsuitable, but it is an additional long-term consideration for buyers of an older or secondhand unit.
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- [RAM & SSD] The gaming pc features DDR5 dual-channel ram architecture with 2 x SO-DIMM slots, supporting speeds up to 5600MT/s and a maximum capacity of 96GB, ensuring high-bandwidth performance and seamless multitasking. For storage, it includes one M.2 NVMe PCIe 4.0 SSD slot (up to 4TB) for lightning-fast data transfers, 2 x SATA 3.0 slots compatible with 2.5-inch SSDs or HDDs, each expandable to 4TB. So you have enough space to store files and games.
- [COOLING & DISPLAY] With the support of the powerful RTX 4070, SL800 can output four screens at the same time (1 x HDMI 2.1, 3 x DP 1.4A), and supports up to 8K@60Hz. At the same time, because of our newly developed Liquid Cooled system, even if you use four screens for multitasking or play large games, it can still maintain a good temperature and frequency.
- [RICH INTERFACES] The mini tower computer is equipped with 1 x Power Button, 1 x LED Switch, 4 x USB2.0 Type-A Port, 4 x USB3.2 Type-A Port, 2x RJ45 LAN Port, 2 x WiFi Antenna Port, 1x Audio Jack, 1 x Headphone jack, 1 x Microphone Jack, 1 x Digital Audio Optical, The rich interfaces of SL800 not only save you extra expenses to purchase expansion devices, but also allow you to have lower latency by directly connecting to the machine, allowing you to be one step ahead in office and gaming.
- [2-YEAR WARRANTY] Our mini pc come with a 2-year warranty and lifetime technical support! The size of the Liquid Cooled computer is only 295*237*101mm (11.6*9.3*3.9 inches) and the weight is only 4.5kg (9.92lb), which can save you a lot of desktop space.
Who was the Neptune for?
The card made the most sense for a narrow group of enthusiasts who specifically wanted factory-installed liquid cooling, a distinctive white-and-silver premium design, a relatively slim GPU body, or the novelty and rarity of an unusual flagship-style RTX 4070. It could also appeal to someone with a sustained workload and a case already designed around a 240mm radiator.
For most buyers, the value calculation was much less favorable. A conventional RTX 4070 offered the same basic GPU tier for $599 at launch, while the same $829 budget reached the faster RTX 4070 Ti’s launch class. Actual used and new-market prices can change the calculation, but the historical MSRP made the Neptune difficult to recommend on performance per dollar alone.
A buyer considering a custom water block should also distinguish that route from the Neptune: this was a self-contained AIO card, not a graphics card designed to plug directly into a standard custom loop. A custom-loop build involves different hardware, cost, installation work and compatibility requirements.
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Availability was uncertain even at launch
Colorful said the card was intended for its official stores, but HotHardware reported that it had not seen the model in the United States at the time and that the reason was unclear. That means the $829 figure should be treated as a reported May 2023 launch price, not a verified current U.S. street price.
As of 2026, any purchase listing should be checked separately for authenticity, stock status, warranty region, import costs, pump condition and included power accessories. The available launch reporting does not establish broad U.S. retail availability or a current price.
Verdict
Colorful’s iGame GeForce RTX 4070 Neptune OC-V was technically unusual: it put a 240mm AIO cooler, higher power target and one-button overclock mode on a relatively slim RTX 4070. But liquid cooling did not change the card’s GPU tier, and the $829 launch price put it above the RTX 4070 Ti’s starting price.
That made the Neptune a niche enthusiast product rather than a sensible default RTX 4070. Its appeal was the integrated cooling system, appearance and novelty—not a clear performance-per-dollar advantage.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
