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GeForce GT 645 vs Iris Xe Graphics MAX

CPUCPUGPUGPU
NVIDIA

GeForce GT 645

2012Core: Up to 710 MHz
Similar parts
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VS
Intel

Iris Xe Graphics MAX

2020Boost: 1650 MHz
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Buy on Amazon

GeForce GT 645 vs Iris Xe Graphics MAX Performance Spectrum

GeForce GT 645
2 GB 32
2,006
+1.7%
brand logoGeForce 840A
brand logoGeForce GTS 450
brand logoGeForce GTX 550 Ti
brand logoGeForce GTX 580M SLI
brand logoGeForce GTX 1650 Ti with Max-Q Design
brand logoGeForce GTX 980
brand logoGeForce GTX 1080
brand logoTITAN V
Iris Xe Graphics MAX
Shared System RAM 25
1,972
0.0%
brand logoArc A530M
brand logoArc A770M
brand logoArc B580

About G3D Mark

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 GT 645 vs Iris Xe Graphics MAX: 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 GT 645

2012

Why buy it

  • ✅100+% more VRAM for high-resolution textures and newer games (2 GB vs Unknown).
  • ✅Iris Xe Graphics MAX is already obsolete for modern gaming, so GeForce GT 645 is the less risky modern option long term.

Trade-offs

  • ❌2012 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
  • ❌
    80% HIGHER MSRP
    $99 MSRPvs$55 MSRP
  • ❌Lower G3D Mark per dollar, at 20.3 vs 35.9 G3D/$ ($99 MSRP vs $55 MSRP).
  • ❌28% higher power demand at 32W vs 25W.

Iris Xe Graphics MAX

2020

Why buy it

  • ✅Costs $44 less on MSRP ($55 MSRP vs $99 MSRP).
  • ✅Delivers 76.9% more G3D Mark for each dollar spent, at 35.9 vs 20.3 G3D/$ ($55 MSRP vs $99 MSRP).
  • ✅Draws 25W instead of 32W, a 7W reduction.

Trade-offs

  • ❌Less VRAM, with Unknown vs 2 GB for high-resolution textures and newer games.
  • ❌2020 hardware with Unknown of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

Quick Answers

Which GPU is faster for gaming right now?
GeForce GT 645 is the faster gaming card right now based on the synthetic data we have. It leads by 1.7% in PassMark G3D (2,006 vs 1,972), which is the best performance signal available in this matchup.
Which GPU is the safer long-term pick for 2026 and beyond?
GeForce GT 645 is the safer long-term pick for 2026 and beyond. The case is simple: 2 GB vs Unknown of VRAM. That gives it more room for heavier textures and higher settings over time.
Which GPU is the better buy today?
Iris Xe Graphics MAX makes the most sense to buy today. It is $44 cheaper on MSRP at $55 vs $99, and it leads G3D-per-dollar by 76.9% (35.9 vs 20.3), which is enough to swing the recommendation its way. If you are mainly targeting 1080p, Iris Xe Graphics MAX is the easier value choice. If you care more about 1080p and some 1440p headroom, GeForce GT 645 has the stronger long-term case.

GeForce GT 645 vs Iris Xe Graphics MAX Technical Specifications

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

NVIDIA

GeForce GT 645

The GeForce GT 645 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: 2,006 points.

Intel

Iris Xe Graphics MAX

The Iris Xe Graphics MAX is manufactured by Intel. It was released in October 31 2020. It features the Generation 12.1 architecture. The boost clock speed is 1650 MHz. It has 768 shading units. The thermal design power (TDP) is 25W. Manufactured using 10 nm process technology. G3D Mark benchmark score: 1,972 points.

⚡

Graphics Performance

The GeForce GT 645 scores 2,006 and the Iris Xe Graphics MAX reaches 1,972 in the G3D Mark benchmark — just a 1.7% difference, making them near-identical in rasterization performance. The GeForce GT 645 is built on Kepler while the Iris Xe Graphics MAX uses Generation 12.1, both on 28 nm vs 10 nm. Shader units: 384 (GeForce GT 645) vs 768 (Iris Xe Graphics MAX). Raw compute: 0.5445 TFLOPS (GeForce GT 645) vs 2.534 TFLOPS (Iris Xe Graphics MAX).

FeatureGeForce GT 645Iris Xe Graphics MAX
G3D Mark Score
2,006+2%
1,972
Architecture
Kepler
Generation 12.1
Process Node
28 nm
10 nm
Shading Units
384
768+100%
Compute (TFLOPS)
0.5445 TFLOPS
2.534 TFLOPS+365%
ROPs
16
24+50%
TMUs
32
48+50%
✨

Advanced Features (DLSS/FSR)

The GeForce GT 645 gets NVIDIA DLSS, which still tends to look cleaner in motion. The Iris Xe Graphics MAX leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

FeatureGeForce GT 645Iris Xe Graphics MAX
Upscaling Tech
Upscaling support
Upscaling support
Frame Generation
Not Supported
Not Supported
Ray Reconstruction
No
No
Low Latency
NVIDIA Reflex
Standard
💾

Video Memory (VRAM)

The GeForce GT 645 has 2 GB of VRAM, while the Iris Xe Graphics MAX carries 0 MB. GeForce GT 645 gives you 100+% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the GeForce GT 645 and System on the Iris Xe Graphics MAX.

FeatureGeForce GT 645Iris Xe Graphics MAX
VRAM Capacity
2 GB
Shared System RAM
Memory Type
GDDR5
Shared
Memory Bandwidth
Unknown
System
Bus Width
128-bit
System
🖥️

Display & API Support

DirectX support: 12 (11_0) (GeForce GT 645) vs 12.1 (Iris Xe Graphics MAX). Vulkan: 1.2 vs 1.0. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 3 vs 4.

FeatureGeForce GT 645Iris Xe Graphics MAX
DirectX
12 (11_0)
12.1
Vulkan
1.2+20%
1.0
OpenGL
4.6
4.6
Max Displays
3
4+33%
🎬

Media & Encoding

Hardware encoder: NVENC (1st Gen) (GeForce GT 645) vs QuickSync (Iris Xe Graphics MAX). Decoder: NVDEC (1st Gen) vs QuickSync. Supported codecs: H.264,MPEG-2,VC-1 (GeForce GT 645) vs H.264,HEVC,AV1 (Iris Xe Graphics MAX).

FeatureGeForce GT 645Iris Xe Graphics MAX
Encoder
NVENC (1st Gen)
QuickSync
Decoder
NVDEC (1st Gen)
QuickSync
Codecs
H.264,MPEG-2,VC-1
H.264,HEVC,AV1
🔌

Power & Dimensions

The GeForce GT 645 draws 32W versus the Iris Xe Graphics MAX's 25W — a 24.6% difference. The Iris Xe Graphics MAX is more power-efficient. Recommended PSU: 350W (GeForce GT 645) vs 1W (Iris Xe Graphics MAX). Power connectors: PCIe-powered vs Integrated. Typical load temperature: 80 vs 85°C.

FeatureGeForce GT 645Iris Xe Graphics MAX
TDP
32W
25W-22%
Recommended PSU
350W
1W-100%
Power Connector
PCIe-powered
Integrated
Length
145mm
—
Height
111mm
—
Slots
1
—
Temp (Load)
80-6%
85°C
Perf/Watt
62.7
78.9+26%
💰

Value Analysis

At launch, the GeForce GT 645 came in at $99, while the Iris Xe Graphics MAX launched at $55. On MSRP, Iris Xe Graphics MAX was 44.4% cheaper ($44 less). Performance per dollar on MSRP (G3D Mark / MSRP): 20.3 (GeForce GT 645) vs 35.9 (Iris Xe Graphics MAX) — the Iris Xe Graphics MAX offers 76.8% better value. The newer card here is Iris Xe Graphics MAX (2020 vs 2012).

FeatureGeForce GT 645Iris Xe Graphics MAX
MSRP
$99
$55-44%
Performance per Dollar
20.3
35.9+77%
Codename
GK107
DG1
Release
October 1 2012
October 31 2020
Ranking
#903
#685
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