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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, raw graphics performance, VRAM, feature set, power efficiency, pricing context, and long-term value so you can see which GPU actually makes more sense.

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

❌Very weak future-proofing: 2012-era hardware with 3 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.

Radeon Instinct MI25 MxGPU

2017

Why buy it

✅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.
❌Very weak future-proofing: 2017-era hardware with 2 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌Lower G3D Mark per dollar, at 0 vs 14.8 G3D/$ (Unknown MSRP vs $299 MSRP).
❌100% higher power demand at 300W vs 150W.

GeForce GTX 660 Ti

2012

Radeon Instinct MI25 MxGPU

2017

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.

Why buy it

✅More future proof: GCN 5.0 (2017−2020) on 14nm with a newer platform for upcoming games.

Trade-offs

❌Very weak future-proofing: 2012-era hardware with 3 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.

Trade-offs

❌Less VRAM, with 2 GB vs 3 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2017-era hardware with 2 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌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

So, is GeForce GTX 660 Ti better than Radeon Instinct MI25 MxGPU?

Yes, but this is not really about a huge raw performance gap. The broader synthetic picture is also very close at 4,415 vs 4,403 in G3D Mark. The bigger reason to prefer GeForce GTX 660 Ti is the overall package: you are getting no meaningful modern upscaling stack, plus much lower power draw (150W vs 300W).

Which one is more future-proof for 2026 and beyond?

GeForce GTX 660 Ti is the more future-proof choice for 2026 and beyond. You are getting more VRAM at 3 GB instead of 2 GB and the stronger feature stack with no meaningful modern upscaling stack instead of FSR upscaling. That extra memory headroom makes it the safer pick for newer games, heavier textures, and higher settings over time.

Which one is the smarter buy today, not just the cheaper card?

GeForce GTX 660 Ti can still make sense if you find it at the right price, especially around $299 MSRP. GeForce GTX 660 Ti is still the smarter buy for most people, though, because the raw performance is close while the overall package is cleaner. GeForce GTX 660 Ti is priced in an unclear MSRP range at $299 MSRP versus an unclear MSRP, and you are getting 0.3% higher G3D Mark. Radeon Instinct MI25 MxGPU is the newer 2017 card, so it still has a real case if you care more about newer architecture than about squeezing out the strongest gaming value today.

When does Radeon Instinct MI25 MxGPU make more sense than GeForce GTX 660 Ti?

Yes. Radeon Instinct MI25 MxGPU is still an excellent gaming GPU in 2026: it is still comfortable for 1080p and decent for 1440p, though 4K is more situational. It makes more sense if your priority is newer architecture and staying closer to an unclear MSRP more than squeezing out the extra headroom of GeForce GTX 660 Ti. The trade-off is that GeForce GTX 660 Ti currently gives you 0.3% higher G3D Mark. It also leads G3D-per-dollar by 100+%.

Games Benchmarks

Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 9800X3D reference profile to minimize specific CPU bottlenecks.

Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.

GeForce GTX 660 Ti Benchmark Check

Radeon Instinct MI25 MxGPU Benchmark Check

Path of Exile 2

Preset	GeForce GTX 660 Ti	Radeon Instinct MI25 MxGPU
1080p
low	46 FPS	139 FPS
medium	28 FPS	129 FPS
high	20 FPS	106 FPS
ultra	10 FPS	81 FPS
1440p
low	31 FPS	118 FPS
medium	19 FPS	102 FPS
high	10 FPS	82 FPS
ultra	5 FPS	64 FPS
4K
low	11 FPS	55 FPS
medium	7 FPS	48 FPS
high	4 FPS	38 FPS
ultra	3 FPS	34 FPS

Open GeForce GTX 660 Ti Open Radeon Instinct MI25 MxGPU

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce GTX 660 Ti	Radeon Instinct MI25 MxGPU
1080p
low	67 FPS	198 FPS
medium	38 FPS	159 FPS
high	28 FPS	132 FPS
ultra	18 FPS	99 FPS
1440p
low	32 FPS	137 FPS
medium	19 FPS	111 FPS
high	13 FPS	92 FPS
ultra	10 FPS	70 FPS
4K
low	9 FPS	60 FPS
medium	6 FPS	50 FPS
high	5 FPS	48 FPS
ultra	3 FPS	40 FPS

Open GeForce GTX 660 Ti Open Radeon Instinct MI25 MxGPU

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce GTX 660 Ti	Radeon Instinct MI25 MxGPU
1080p
low	199 FPS	198 FPS
medium	159 FPS	159 FPS
high	132 FPS	132 FPS
ultra	99 FPS	99 FPS
1440p
low	149 FPS	149 FPS
medium	119 FPS	119 FPS
high	99 FPS	99 FPS
ultra	75 FPS	74 FPS
4K
low	99 FPS	99 FPS
medium	79 FPS	79 FPS
high	66 FPS	66 FPS
ultra	50 FPS	50 FPS

Open GeForce GTX 660 Ti Open Radeon Instinct MI25 MxGPU

League of Legends

League of Legends

Valorant

Preset	GeForce GTX 660 Ti	Radeon Instinct MI25 MxGPU
1080p
low	131 FPS	198 FPS
medium	106 FPS	159 FPS
high	87 FPS	132 FPS
ultra	62 FPS	99 FPS
1440p
low	73 FPS	149 FPS
medium	60 FPS	119 FPS
high	53 FPS	99 FPS
ultra	35 FPS	74 FPS
4K
low	40 FPS	99 FPS
medium	31 FPS	79 FPS
high	27 FPS	66 FPS
ultra	17 FPS	50 FPS

Open GeForce GTX 660 Ti Open Radeon Instinct MI25 MxGPU

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce GTX 660 Ti and Radeon Instinct MI25 MxGPU

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.

⚡

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%

✨

Advanced Features (DLSS/FSR)

The GeForce GTX 660 Ti gives access to NVIDIA DLSS (Deep Learning Super Sampling), widely regarding as the superior upscaling method for image quality. The Radeon Instinct MI25 MxGPU relies on FSR (FidelityFX Super Resolution), which is capable but generally slightly noisier than DLSS in motion.

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

💾

Video Memory (VRAM)

The GeForce GTX 660 Ti comes with 3 GB of VRAM, while the Radeon Instinct MI25 MxGPU has 2 GB. The GeForce GTX 660 Ti offers 50% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 192-bit vs 64-bit. 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%

🔌

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