GeForce GTX 645 vs Radeon HD 7700-serie

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 645

2010

Why buy it

✅Costs $9 less on MSRP ($150 MSRP vs $159 MSRP).
✅100% more VRAM for high-resolution textures and newer games (1 GB vs 512 MB).
✅Draws 200W instead of 250W, a 50W reduction.

Trade-offs

❌Very weak future-proofing: 2010-era hardware with 1 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.

Radeon HD 7700-serie

2012

Why buy it

✅More future proof: GCN 1.0 (2012−2020) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Less VRAM, with 512 MB vs 1 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2012-era hardware with 512 MB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌
6% HIGHER MSRP
$159 MSRPvs$150 MSRP
❌25% higher power demand at 250W vs 200W.

GeForce GTX 645

2010

Radeon HD 7700-serie

2012

Why buy it

✅Costs $9 less on MSRP ($150 MSRP vs $159 MSRP).
✅100% more VRAM for high-resolution textures and newer games (1 GB vs 512 MB).
✅Draws 200W instead of 250W, a 50W reduction.

Why buy it

✅More future proof: GCN 1.0 (2012−2020) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Very weak future-proofing: 2010-era hardware with 1 GB of VRAM is already obsolete for modern gaming and is hard to recommend today.

Trade-offs

❌Less VRAM, with 512 MB vs 1 GB for high-resolution textures and newer games.
❌Very weak future-proofing: 2012-era hardware with 512 MB of VRAM is already obsolete for modern gaming and is hard to recommend today.
❌
6% HIGHER MSRP
$159 MSRPvs$150 MSRP
❌25% higher power demand at 250W vs 200W.

Quick Answers

So, is Radeon HD 7700-serie better than GeForce GTX 645?

Yes, but this is not really about a huge raw performance gap. The broader synthetic picture is also very close at 1,880 vs 1,899 in G3D Mark. The bigger reason to prefer Radeon HD 7700-serie is the overall package: you are getting a newer generation, FSR upscaling.

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

GeForce GTX 645 is the more future-proof choice for 2026 and beyond. You are getting more VRAM at 1 GB instead of 512 MB 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?

Radeon HD 7700-serie is the smarter buy by a wide margin. Radeon HD 7700-serie is about 6.0% more expensive on MSRP at $159 MSRP versus $150 MSRP, and you are getting 1.0% higher G3D Mark. GeForce GTX 645 really only makes sense now as a very cheap stopgap or a used-market placeholder.

When does GeForce GTX 645 make more sense than Radeon HD 7700-serie?

Yes. GeForce GTX 645 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 lower power draw (200W vs 250W), future-proofing, and staying closer to $150 MSRP more than squeezing out the extra headroom of Radeon HD 7700-serie. The trade-off is that Radeon HD 7700-serie currently gives you 1.0% higher G3D Mark. GeForce GTX 645 still holds the G3D-per-dollar lead, so the performance win comes with a real value premium.

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 645 Benchmark Check

Radeon HD 7700-serie Benchmark Check

Path of Exile 2

Preset	GeForce GTX 645	Radeon HD 7700-serie
1080p
low	66 FPS	77 FPS
medium	54 FPS	63 FPS
high	38 FPS	50 FPS
ultra	26 FPS	33 FPS
1440p
low	52 FPS	64 FPS
medium	43 FPS	51 FPS
high	27 FPS	38 FPS
ultra	18 FPS	24 FPS
4K
low	20 FPS	24 FPS
medium	19 FPS	23 FPS
high	12 FPS	14 FPS
ultra	10 FPS	12 FPS

Open GeForce GTX 645 Open Radeon HD 7700-serie

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce GTX 645	Radeon HD 7700-serie
1080p
low	85 FPS	85 FPS
medium	62 FPS	68 FPS
high	50 FPS	57 FPS
ultra	38 FPS	43 FPS
1440p
low	49 FPS	64 FPS
medium	33 FPS	51 FPS
high	23 FPS	43 FPS
ultra	18 FPS	32 FPS
4K
low	23 FPS	32 FPS
medium	16 FPS	24 FPS
high	12 FPS	19 FPS
ultra	9 FPS	14 FPS

Open GeForce GTX 645 Open Radeon HD 7700-serie

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce GTX 645	Radeon HD 7700-serie
1080p
low	85 FPS	85 FPS
medium	68 FPS	68 FPS
high	56 FPS	57 FPS
ultra	42 FPS	43 FPS
1440p
low	63 FPS	64 FPS
medium	51 FPS	51 FPS
high	42 FPS	43 FPS
ultra	32 FPS	32 FPS
4K
low	42 FPS	43 FPS
medium	34 FPS	34 FPS
high	28 FPS	28 FPS
ultra	21 FPS	21 FPS

Open GeForce GTX 645 Open Radeon HD 7700-serie

League of Legends

League of Legends

Valorant

Preset	GeForce GTX 645	Radeon HD 7700-serie
1080p
low	85 FPS	73 FPS
medium	68 FPS	62 FPS
high	56 FPS	54 FPS
ultra	42 FPS	43 FPS
1440p
low	63 FPS	58 FPS
medium	51 FPS	50 FPS
high	42 FPS	43 FPS
ultra	32 FPS	32 FPS
4K
low	42 FPS	41 FPS
medium	34 FPS	33 FPS
high	28 FPS	26 FPS
ultra	21 FPS	20 FPS

Open GeForce GTX 645 Open Radeon HD 7700-serie

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce GTX 645 and Radeon HD 7700-serie

GeForce GTX 645

The GeForce GTX 645 is manufactured by NVIDIA. It was released in May 31 2010. It features the Fermi architecture. The core clock speed is 607 MHz. It has 352 shading units. The thermal design power (TDP) is 200W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 1,880 points. Launch price was $279.

Radeon HD 7700-serie

The Radeon HD 7700-serie is manufactured by AMD. It was released in January 9 2012. It features the GCN 1.0 architecture. The boost clock speed is 925 MHz. It has 2048 shading units. The thermal design power (TDP) is 250W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,899 points. Launch price was $549.

⚡

Graphics Performance

The GeForce GTX 645 scores 1,880 and the Radeon HD 7700-serie reaches 1,899 in the G3D Mark benchmark — just a 1% difference, making them near-identical in rasterization performance. The GeForce GTX 645 is built on Fermi while the Radeon HD 7700-serie uses GCN 1.0, both on 40 nm vs 28 nm. Shader units: 352 (GeForce GTX 645) vs 2,048 (Radeon HD 7700-serie). Raw compute: 0.8554 TFLOPS (GeForce GTX 645) vs 3.789 TFLOPS (Radeon HD 7700-serie).

Feature	GeForce GTX 645	Radeon HD 7700-serie
G3D Mark Score	1,880	1,899+1%
Architecture	Fermi	GCN 1.0
Process Node	40 nm	28 nm
Shading Units	352	2048+482%
Compute (TFLOPS)	0.8554 TFLOPS	3.789 TFLOPS+343%
ROPs	32	32
TMUs	44	128+191%
L1 Cache	704 KB+38%	512 KB
L2 Cache	512 KB	768 KB+50%

✨

Advanced Features (DLSS/FSR)

The GeForce GTX 645 gives access to NVIDIA DLSS (Deep Learning Super Sampling), widely regarding as the superior upscaling method for image quality. The Radeon HD 7700-serie relies on FSR (FidelityFX Super Resolution), which is capable but generally slightly noisier than DLSS in motion.

Feature	GeForce GTX 645	Radeon HD 7700-serie
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 645 comes with 1 GB of VRAM, while the Radeon HD 7700-serie has 512 MB. The GeForce GTX 645 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit. L2 Cache: 512 KB (GeForce GTX 645) vs 768 KB (Radeon HD 7700-serie) — the Radeon HD 7700-serie has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GTX 645	Radeon HD 7700-serie
VRAM Capacity	1 GB+100%	0.5 GB
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	512 KB	768 KB+50%

🔌

Power & Dimensions

The GeForce GTX 645 draws 200W versus the Radeon HD 7700-serie's 250W — a 22.2% difference. The GeForce GTX 645 is more power-efficient. Recommended PSU: 300W (GeForce GTX 645) vs 450W (Radeon HD 7700-serie). Power connectors: None vs 1x 6-pin.

Feature	GeForce GTX 645	Radeon HD 7700-serie
TDP	200W-20%	250W
Recommended PSU	300W-33%	450W
Power Connector	None	1x 6-pin
Length	147mm	—
Height	111mm	—
Slots	1	—
Temp (Load)	80	—
Perf/Watt	9.4+24%	7.6

💰

Value Analysis

The GeForce GTX 645 launched at $150 MSRP, while the Radeon HD 7700-serie launched at $159. The GeForce GTX 645 costs 5.7% less ($9 savings) on MSRP. Performance per dollar on MSRP (G3D Mark / MSRP): 12.5 (GeForce GTX 645) vs 11.9 (Radeon HD 7700-serie) — the GeForce GTX 645 offers 5% better value. The Radeon HD 7700-serie is the newer GPU (2012 vs 2010).