GeForce GTX 660 Ti vs Radeon Instinct MI25 MxGPU

G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.

GeForce GTX 660 Ti vs Radeon Instinct MI25 MxGPU FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.

Search any supported game below to compare 1080p FPS for both components.

GeForce GTX 660 Ti vs Radeon Instinct MI25 MxGPU: Pros, Cons & Final Verdict

See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.

GeForce GTX 660 Ti

2012

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 14.8 vs 0 G3D/$ ($299 MSRP vs Unknown MSRP).
✅50% more VRAM for high-resolution textures and newer games (3 GB vs 2 GB).
✅Draws 150W instead of 300W, a 150W reduction.

Trade-offs

❌Lower average FPS than Radeon Instinct MI25 MxGPU across 50 tracked games in our benchmark data.
❌2012 hardware with 3 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Radeon Instinct MI25 MxGPU

2017

Why buy it

✅116.2% more average FPS across 50 tracked games in our benchmark data.
✅More future proof: GCN 5.0 (2017−2020) on 14nm with a newer platform for upcoming games.

Trade-offs

❌Less VRAM, with 2 GB vs 3 GB for high-resolution textures and newer games.
❌2017 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌Lower G3D Mark per dollar, at 0 vs 14.8 G3D/$ (Unknown MSRP vs $299 MSRP).
❌100% higher power demand at 300W vs 150W.

Quick Answers

Which GPU is faster for gaming right now?

Radeon Instinct MI25 MxGPU is the faster gaming card right now. In our data, it leads by 116.2% in average FPS across 50 tracked games in our benchmark data. PassMark G3D leans toward GeForce GTX 660 Ti instead at 4,415 vs 4,403, so for this question the real-game FPS result matters more than the synthetic split.

Which GPU is the safer long-term pick for 2026 and beyond?

GeForce GTX 660 Ti is the safer long-term pick for 2026 and beyond. The case is simple: 3 GB vs 2 GB of VRAM. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

GeForce GTX 660 Ti makes the most sense today based on the pricing and value data we have for this matchup. Radeon Instinct MI25 MxGPU still makes more sense if max raw gaming performance matters more than value.

GeForce GTX 660 Ti vs Radeon Instinct MI25 MxGPU Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

GeForce GTX 660 Ti

The GeForce GTX 660 Ti is manufactured by NVIDIA. It was released in August 16 2012. It features the Kepler architecture. The core clock ranges from 915 MHz to 980 MHz. It has 1344 shading units. The thermal design power (TDP) is 150W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 4,415 points. Launch price was $299.

Radeon Instinct MI25 MxGPU

The Radeon Instinct MI25 MxGPU is manufactured by AMD. It was released in June 27 2017. It features the GCN 5.0 architecture. The core clock ranges from 1400 MHz to 1500 MHz. It has 4096 ×2 shading units. The thermal design power (TDP) is 300W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 4,403 points.

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Graphics Performance

The GeForce GTX 660 Ti scores 4,415 and the Radeon Instinct MI25 MxGPU reaches 4,403 in the G3D Mark benchmark — just a 0.3% difference, making them near-identical in rasterization performance. The GeForce GTX 660 Ti is built on Kepler while the Radeon Instinct MI25 MxGPU uses GCN 5.0, both on 28 nm vs 14 nm. Shader units: 1,344 (GeForce GTX 660 Ti) vs 4,096 (Radeon Instinct MI25 MxGPU). Raw compute: 2.634 TFLOPS (GeForce GTX 660 Ti) vs 12.29 TFLOPS ×2 (Radeon Instinct MI25 MxGPU). Boost clocks: 980 MHz vs 1500 MHz.

Feature	GeForce GTX 660 Ti	Radeon Instinct MI25 MxGPU
G3D Mark Score	4,415	4,403
Architecture	Kepler	GCN 5.0
Process Node	28 nm	14 nm
Shading Units	1344	4096 ×2+205%
Compute (TFLOPS)	2.634 TFLOPS	12.29 TFLOPS ×2+367%
Boost Clock	980 MHz	1500 MHz+53%
ROPs	24	64 ×2+167%
TMUs	112	256 ×2+129%
L1 Cache	0.11 MB	1 MB+809%
L2 Cache	0.38 MB	4 MB+953%

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Advanced Features (DLSS/FSR)

The GeForce GTX 660 Ti gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon Instinct MI25 MxGPU leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GTX 660 Ti	Radeon Instinct MI25 MxGPU
Upscaling Tech	Upscaling support	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	NVIDIA Reflex	AMD Anti-Lag

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Video Memory (VRAM)

The GeForce GTX 660 Ti has 3 GB of VRAM, while the Radeon Instinct MI25 MxGPU carries 2 GB. GeForce GTX 660 Ti gives you 50% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 192-bit on the GeForce GTX 660 Ti and 64-bit on the Radeon Instinct MI25 MxGPU. L2 Cache: 0.38 MB (GeForce GTX 660 Ti) vs 4 MB (Radeon Instinct MI25 MxGPU) — the Radeon Instinct MI25 MxGPU has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GTX 660 Ti	Radeon Instinct MI25 MxGPU
VRAM Capacity	3 GB+50%	2 GB
Memory Type	GDDR5	GDDR5
Bus Width	192-bit+200%	64-bit
L2 Cache	0.38 MB	4 MB+953%

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Power & Dimensions

The GeForce GTX 660 Ti draws 150W versus the Radeon Instinct MI25 MxGPU's 300W — a 66.7% difference. The GeForce GTX 660 Ti is more power-efficient. Recommended PSU: 450W (GeForce GTX 660 Ti) vs 350W (Radeon Instinct MI25 MxGPU). Power connectors: 2x 6-pin vs PCIe-powered.

Feature	GeForce GTX 660 Ti	Radeon Instinct MI25 MxGPU
TDP	150W-50%	300W
Recommended PSU	450W	350W-22%
Power Connector	2x 6-pin	PCIe-powered
Length	241mm	—
Height	111mm	—
Slots	2	—
Temp (Load)	97°C	—
Perf/Watt	29.4+100%	14.7

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Value Analysis

The newer card here is Radeon Instinct MI25 MxGPU (2017 vs 2012).

Feature	GeForce GTX 660 Ti	Radeon Instinct MI25 MxGPU
MSRP	$299	—
Codename	GK104	Vega 10
Release	August 16 2012	June 27 2017
Ranking	#472	#474

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