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 GT 645M

2012

Why buy it

✅300% more VRAM for high-resolution textures and newer games (2 GB vs 512 MB).
✅Draws 32W instead of 80W, a 48W reduction.
✅More future proof: Kepler (2012−2018) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Very weak future-proofing: 2012-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 8.3 G3D/$ (Unknown MSRP vs $109 MSRP).

Radeon HD 4770

2009

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 8.3 vs 0 G3D/$ ($109 MSRP vs Unknown MSRP).

Trade-offs

❌Less VRAM, with 512 MB vs 2 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2009-era hardware with 512 MB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌150% higher power demand at 80W vs 32W.

GeForce GT 645M

2012

Radeon HD 4770

2009

Why buy it

✅300% more VRAM for high-resolution textures and newer games (2 GB vs 512 MB).
✅Draws 32W instead of 80W, a 48W reduction.
✅More future proof: Kepler (2012−2018) on 28nm with a newer platform for upcoming games.

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 8.3 vs 0 G3D/$ ($109 MSRP vs Unknown MSRP).

Trade-offs

❌Very weak future-proofing: 2012-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 8.3 G3D/$ (Unknown MSRP vs $109 MSRP).

Trade-offs

❌Less VRAM, with 512 MB vs 2 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2009-era hardware with 512 MB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌150% higher power demand at 80W vs 32W.

Quick Answers

So, is GeForce GT 645M better than Radeon HD 4770?

Yes, but this is not really about a huge raw performance gap. The broader synthetic picture is also very close at 945 vs 909 in G3D Mark. The bigger reason to prefer GeForce GT 645M is the overall package: you are getting a newer generation, no meaningful modern upscaling stack, plus much lower power draw (32W vs 80W).

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

GeForce GT 645M is the more future-proof choice for 2026 and beyond. You are getting a newer 2012 generation instead of 2009, more VRAM at 2 GB instead of 512 MB, the stronger feature stack with no meaningful modern upscaling stack instead of FSR upscaling, and a 28nm process instead of 40nm. 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 GT 645M is the smarter buy by a wide margin. GeForce GT 645M is priced in an unclear MSRP range at an unclear MSRP versus $109 MSRP, and you are getting 4.0% higher G3D Mark. Radeon HD 4770 really only makes sense now as a very cheap stopgap or a used-market placeholder.

Is Radeon HD 4770 still worth buying for gaming in 2026?

No, not for a fresh gaming build. Radeon HD 4770 is 2009 hardware with 512 MB of VRAM, 909 in G3D Mark, and FSR upscaling. That is simply too far behind to be an easy modern recommendation.

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 GT 645M Benchmark Check

Radeon HD 4770 Benchmark Check

Path of Exile 2

Preset	GeForce GT 645M	Radeon HD 4770
1080p
low	14 FPS	18 FPS
medium	9 FPS	10 FPS
high	5 FPS	6 FPS
ultra	3 FPS	3 FPS
1440p
low	9 FPS	11 FPS
medium	5 FPS	6 FPS
high	2 FPS	3 FPS
ultra	1 FPS	1 FPS
4K
low	4 FPS	4 FPS
medium	2 FPS	2 FPS
high	1 FPS	1 FPS
ultra	1 FPS	1 FPS

Open GeForce GT 645M Open Radeon HD 4770

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce GT 645M	Radeon HD 4770
1080p
low	24 FPS	37 FPS
medium	10 FPS	19 FPS
high	7 FPS	14 FPS
ultra	6 FPS	10 FPS
1440p
low	8 FPS	11 FPS
medium	3 FPS	6 FPS
high	2 FPS	4 FPS
ultra	2 FPS	4 FPS
4K
low	3 FPS	3 FPS
medium	1 FPS	2 FPS
high	1 FPS	2 FPS
ultra	1 FPS	1 FPS

Open GeForce GT 645M Open Radeon HD 4770

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce GT 645M	Radeon HD 4770
1080p
low	43 FPS	41 FPS
medium	34 FPS	33 FPS
high	28 FPS	27 FPS
ultra	21 FPS	20 FPS
1440p
low	32 FPS	31 FPS
medium	26 FPS	25 FPS
high	21 FPS	20 FPS
ultra	16 FPS	15 FPS
4K
low	21 FPS	20 FPS
medium	17 FPS	16 FPS
high	14 FPS	14 FPS
ultra	11 FPS	10 FPS

Open GeForce GT 645M Open Radeon HD 4770

League of Legends

League of Legends

Valorant

Preset	GeForce GT 645M	Radeon HD 4770
1080p
low	43 FPS	41 FPS
medium	34 FPS	33 FPS
high	28 FPS	27 FPS
ultra	18 FPS	20 FPS
1440p
low	7 FPS	27 FPS
medium	5 FPS	20 FPS
high	4 FPS	15 FPS
ultra	2 FPS	11 FPS
4K
low	4 FPS	16 FPS
medium	3 FPS	12 FPS
high	2 FPS	9 FPS
ultra	1 FPS	6 FPS

Open GeForce GT 645M Open Radeon HD 4770

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce GT 645M and Radeon HD 4770

GeForce GT 645M

The GeForce GT 645M is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is Up to 710 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 945 points.

Radeon HD 4770

The Radeon HD 4770 is manufactured by AMD. It was released in April 28 2009. It features the TeraScale architecture. The core clock speed is 750 MHz. It has 640 shading units. The thermal design power (TDP) is 80W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 909 points. Launch price was $109.

⚡

Graphics Performance

The GeForce GT 645M scores 945 and the Radeon HD 4770 reaches 909 in the G3D Mark benchmark — just a 4% difference, making them near-identical in rasterization performance. The GeForce GT 645M is built on Kepler while the Radeon HD 4770 uses TeraScale, both on 28 nm vs 40 nm. Shader units: 384 (GeForce GT 645M) vs 640 (Radeon HD 4770). Raw compute: 0.5445 TFLOPS (GeForce GT 645M) vs 0.96 TFLOPS (Radeon HD 4770).

Feature	GeForce GT 645M	Radeon HD 4770
G3D Mark Score	945+4%	909
Architecture	Kepler	TeraScale
Process Node	28 nm	40 nm
Shading Units	384	640+67%
Compute (TFLOPS)	0.5445 TFLOPS	0.96 TFLOPS+76%
ROPs	16	16
TMUs	32	32
L1 Cache	32 KB	128 KB+300%
L2 Cache	256 KB+100%	128 KB

✨

Advanced Features (DLSS/FSR)

The GeForce GT 645M gives access to NVIDIA DLSS (Deep Learning Super Sampling), widely regarding as the superior upscaling method for image quality. The Radeon HD 4770 relies on FSR (FidelityFX Super Resolution), which is capable but generally slightly noisier than DLSS in motion.

Feature	GeForce GT 645M	Radeon HD 4770
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 GT 645M comes with 2 GB of VRAM, while the Radeon HD 4770 has 512 MB. The GeForce GT 645M offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 64-bit. L2 Cache: 256 KB (GeForce GT 645M) vs 128 KB (Radeon HD 4770) — the GeForce GT 645M has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GT 645M	Radeon HD 4770
VRAM Capacity	2 GB+300%	0.5 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit+100%	64-bit
L2 Cache	256 KB+100%	128 KB

🖥️

Display & API Support

DirectX support: 11.0 (GeForce GT 645M) vs 10.1 (Radeon HD 4770). OpenGL: 4.5 vs 3.3. Maximum simultaneous displays: 1 vs 3.

Feature	GeForce GT 645M	Radeon HD 4770
DirectX	11.0+9%	10.1
OpenGL	4.5+36%	3.3
Max Displays	1	3+200%

🎬

Media & Encoding

Decoder: PureVideo HD VP5 vs UVD 2.2. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce GT 645M) vs H.264,VC-1,MPEG-2,DivX (Radeon HD 4770).

Feature	GeForce GT 645M	Radeon HD 4770
Encoder	NVENC 1.0	—
Decoder	PureVideo HD VP5	UVD 2.2
Codecs	MPEG-2,H.264,VC-1,MPEG-4 ASP	H.264,VC-1,MPEG-2,DivX

🔌

Power & Dimensions

The GeForce GT 645M draws 32W versus the Radeon HD 4770's 80W — a 85.7% difference. The GeForce GT 645M is more power-efficient. Recommended PSU: 350W (GeForce GT 645M) vs 400W (Radeon HD 4770). Power connectors: PCIe-powered vs 1x 6-pin. Card length: 0mm vs 203mm, occupying 0 vs 2 slots. Typical load temperature: 70°C vs 72°C.

Feature	GeForce GT 645M	Radeon HD 4770
TDP	32W-60%	80W
Recommended PSU	350W-13%	400W
Power Connector	PCIe-powered	1x 6-pin
Length	0mm	203mm
Height	0mm	—
Slots	0-100%	2
Temp (Load)	70°C-3%	72°C
Perf/Watt	29.5+159%	11.4