Upgrading From GTX 1660 Ti to RTX 4060 Ti 16GB: What You Actually Gain

Going from a GTX 1660 Ti to an RTX 4060 Ti 16GB roughly doubles your gaming performance, adds ray tracing and DLSS with frame generation, and lifts VRAM from 6 GB to 16 GB, so it is a worthwhile upgrade for 1080p and 1440p players whose card can no longer run new games at decent settings. The catch is value: the RTX 4060 Ti 16GB launched at $499, and in 2026 current cards such as the RTX 5060 Ti 16GB, RX 9060 XT 16GB or Arc B580 often deliver similar or better results for less.

The GTX 1660 Ti launched in February 2019 at $279 as a Turing card without RT or Tensor cores. The RTX 4060 Ti 16GB arrived in May 2023 at $499 as Nvidia’s Ada Lovelace mid-range card with doubled memory. Both are now previous-generation products; the RTX 4060 Ti 16GB was succeeded by the RTX 5060 Ti 16GB in 2025.

51RISC GeForce GTX 1660 Ti Graphics Card, 6GB GDDR6 192bit Video Card for Gaming GPU PCIe 3.0 x16 DP HDMI DVI 1080P 2K Game PC Card 1660ti 4K 8K Display (GTX 1660 Ti - Red)

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SRhonyra GTX 1660 Ti 6GB Graphics Card GDDR5

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MSI GeForce RTX 4060 Ti Ventus 3X 16G OC Graphics Card -NVIDIA RTX 4060 Ti, 16GB GDDR6 Memory, 18Gbps, PCIe 4.0, DLSS3

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Spec Comparison: Four Years of Progress

Memory bandwidth is identical at 288 GB/s, and the RTX 4060 Ti actually has a narrower 128-bit bus. Nvidia compensates with a 32 MB L2 cache, more than 20 times larger than the GTX 1660 Ti’s, plus nearly three times as many CUDA cores running at much higher clocks. The narrow bus is one reason the RTX 4060 Ti was criticized at launch, but it is still a very large step up from Turing.

How Much Faster in Games

The RTX 4060 Ti 16GB performs almost identically to the 8 GB RTX 4060 Ti in most games, landing near RTX 3060 Ti to RTX 3070 territory in TechPowerUp, Tom’s Hardware and Hardware Unboxed reviews, except where the extra memory prevents stutter. Against the GTX 1660 Ti, multi-game aggregates and 3DMark Time Spy data place the RTX 4060 Ti 16GB roughly 80-115% faster, effectively double the performance in many modern titles. More conservative aggregates that mix in older, lighter games show smaller gains around 55-80%.

• 1080p: Roughly 1.8-2x the frame rate in modern AAA games at the same settings, less in CPU-bound esports titles.
• 1440p: The gap can exceed 2x in new games, because 6 GB of VRAM forces the GTX 1660 Ti into lower texture settings or causes heavy stutter.

As an approximate example, a recent game that runs in the high-30s to mid-40s fps at 1080p medium on a GTX 1660 Ti would typically run around 75-90 fps on an RTX 4060 Ti 16GB, before any upscaling. Results vary with settings, CPU, game patch and drivers.

New Features You Gain

The feature gap is arguably bigger than the raw performance gap, because the GTX 16 series lacks the hardware for Nvidia’s newer technologies.

• DLSS upscaling: The GTX 1660 Ti has no Tensor cores, so it cannot use DLSS at all and relies on FSR or XeSS. The RTX 4060 Ti supports DLSS including the DLSS 4 transformer model.
• DLSS Frame Generation: Supported on RTX 40-series cards. Multi Frame Generation is limited to RTX 50 cards.
• Ray tracing: The GTX 1660 Ti has no RT cores; a growing number of games now require ray tracing hardware or run poorly without it. The RTX 4060 Ti handles moderate RT at 1080p, especially with DLSS.
• AV1 encoding: The newer NVENC can encode AV1 for streaming and recording.
• Reflex and Ray Reconstruction: Available on RTX cards.

VRAM: 6 GB to 16 GB

Six gigabytes is now the GTX 1660 Ti’s biggest limitation. Many recent games recommend 8 GB or more for 1080p high, and some refuse to run well at all on 6 GB without minimum textures. The 16 GB buffer on the RTX 4060 Ti 16GB covers any game at 1080p and 1440p with high textures, and it helps with frame generation and ray tracing, which both use extra memory.

A practical VRAM guide for current games: around 8 GB is the minimum for 1080p medium-high, 10-12 GB is comfortable for 1440p high, and 16 GB leaves room for ultra textures and ray tracing. The RTX 4060 Ti 16GB sits at the top of that guide.

Older PC? Check the PCIe Link

Many systems that still use a GTX 1660 Ti have PCIe 3.0 motherboards. The RTX 4060 Ti uses only eight PCIe lanes (PCIe 4.0 x8). On a PCIe 3.0 board, that halves the available link bandwidth. In most games the impact is small, but it grows when the card runs out of VRAM and has to swap data over the bus. The 16 GB version is much less exposed to this than the 8 GB version, which is one argument for the 16 GB model in an older platform.

Also check your CPU. An older quad-core or early six-core processor can hold an RTX 4060 Ti back at 1080p. If your CPU is from around 2017-2018, the GPU upgrade will still help, but expect smaller gains in CPU-heavy games.

Power, PSU and Case Fit

Using GPU TDP plus CPU plus roughly 150 W headroom:

• GTX 1660 Ti: 120 W + ~125 W + 150 W = ~395 W, so 450-500 W was typical.
• RTX 4060 Ti 16GB: 165 W + ~125 W + 150 W = ~440 W, so a quality 550 W unit is a sensible target.

If your current PSU is a decent 500 W unit or larger, it will likely handle the upgrade. The RTX 4060 Ti 16GB listed here uses a 16-pin connector; many partner cards use a single standard 8-pin instead, the same plug your GTX 1660 Ti already uses, which makes the swap simpler. Length grows only slightly, from 229 mm to 240 mm, and both are 2-slot cards, so case fit is rarely an issue, although some partner models are longer. Note the outputs: the RTX 4060 Ti drops DVI, so an older DVI-only monitor will need an adapter.

Cost per Performance: Then and Now

At launch prices, the RTX 4060 Ti 16GB offered only slightly better performance per dollar than the GTX 1660 Ti did in 2019, which explains its lukewarm reviews. Its real value is the feature set and memory. In 2026 the RTX 5060 Ti 16GB (launched at $429), RX 9060 XT 16GB ($349) and Arc B580 ($249, 12 GB) change the math: each offers a large jump over a GTX 1660 Ti at a lower launch price. Used RTX 4060 Ti 16GB cards usually sell around $300-$380, while a GTX 1660 Ti fetches roughly $80-$120 used.

Is the Upgrade Right for You?

Frequently Asked Questions

How much faster is the RTX 4060 Ti 16GB than the GTX 1660 Ti?

Most benchmark data puts it at roughly 80-115% faster, effectively double the performance in many modern games. The gap is larger at 1440p and in games that need more than 6 GB of VRAM. With DLSS and frame generation enabled, the effective gap grows further.

Will my GTX 1660 Ti power supply work with an RTX 4060 Ti?

Usually yes, if it is a quality 500-550 W unit. The RTX 4060 Ti 16GB has a 165 W TDP, only 45 W more than the GTX 1660 Ti. Many partner cards use a single 8-pin connector, so no new cables are needed.

Does the PCIe 4.0 x8 interface hurt performance on older motherboards?

On PCIe 3.0 boards there can be a small loss, typically minor in most games. The 16 GB version is less affected because it rarely runs out of VRAM. The impact is more noticeable on 8 GB cards.

Can the GTX 1660 Ti use DLSS?

No, the GTX 16 series lacks the Tensor cores that DLSS requires. It can use FSR and XeSS upscaling instead. That is one of the biggest reasons to move to an RTX card.

Is the RTX 5060 Ti 16GB a better choice than the RTX 4060 Ti 16GB?

Generally yes, if prices are close. The RTX 5060 Ti 16GB launched at a lower $429 MSRP, performs somewhat better in most reviews and supports DLSS Multi Frame Generation. A used RTX 4060 Ti 16GB only makes sense at a clear discount.