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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 640 v3 Zotac 2GB Edition Iris Pro Graphics 5200 Desktop
Red Dead Redemption 2 529% 540%
Cyberpunk 2077 765% 779%
Doom Eternal 441% 450%
Dragon Ball Z Kakarot 288% 295%
Call of Duty: Modern Warfare 529% 540%
Microsoft Flight Simulator 765% 779%
FIFA 20 235% 241%
Grand Theft Auto VI 862% 877%
Star Wars: Jedi - Fallen Order 765% 779%
Need For Speed Heat 529% 540%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 640 v3 Zotac 2GB Edition are marginally better than the Intel Iris Pro Graphics 5200 Desktop.

The GT 640 has a 646 MHz higher core clock speed and 8 more Texture Mapping Units than the Pro Graphics. This results in the GT 640 providing 13.5 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GT 640 has a 646 MHz higher core clock speed and 4 more Render Output Units than the Pro Graphics. This results in the GT 640 providing 6.8 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The Pro Graphics was released less than a year after the GT 640, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GT 640 has 2048 MB video memory, but the Pro Graphics does not have an entry, so the two GPUs cannot be reliably compared in this area.

The GeForce GT 640 v3 Zotac 2GB Edition has 384 Shader Processing Units and the Iris Pro Graphics 5200 Desktop has 160. However, the actual shader performance of the GT 640 is 402 and the actual shader performance of the Pro Graphics is 314. The GT 640 having 88 better shader performance and an altogether better performance when taking into account other relevant data means that the GT 640 delivers a slightly smoother and more efficient experience when processing graphical data than the Pro Graphics.

The Pro Graphics transistor size technology is 6 nm (nanometers) smaller than the GT 640. This means that the Pro Graphics is expected to run very slightly cooler and achieve higher clock frequencies than the GT 640. While they exhibit similar graphical performance, the Pro Graphics should consume less power than the GT 640.

The GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts to run and the Iris Pro Graphics 5200 Desktop requires 28 Watts. We would recommend a PSU with at least 350 Watts for the GT 640. The GT 640 requires 21 Watts more than the Pro Graphics to run. The difference is not significant enough for the GT 640 to have a noticeably larger impact on your yearly electricity bills than the Pro Graphics.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1046 MHzvs400 MHz
Boost Clock-vs-
ArchitectureKepler GK208-400-A1Haswell: GT3e
OC Potential Poor vs None
Driver Support Good vs -
Release Date29 May 2013vs03 Jun 2013
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
green tick vs -
green tick vs -
green tick vs -
green tick vs -

GPU Memory

Memory2048 MBvs-
Memory Speed1252 MHzvs800 MHz
Memory Bus64 Bitvs128 Bit
Memory TypeGDDR5vsDDR3
Memory Bandwidth40.1GB/secvs25.6GB/sec
L2 Cache 128 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units384vs160
Actual Shader Performance19%vs15%
Texture Mapping Units16vs8
Texture Rate16.7 GTexel/svs3.2 GTexel/s
Render Output Units8vs4
Pixel Rate8.4 GPixel/svs1.6 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections1vs0
DVI Connections1vs0
HDMI Connections1vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power49 Wattsvs28 Watts
Recommended PSU350 Watts & 26 Amps-

GPU Features

Shader Model5.0vs5.0
Open GL4.5vs4.0
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3220 3.3GHz-
Recommended RAM8 GB-
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GT 640 v3 Zotac 2GB Edition is a special edition of NVIDIA's Middle-Class GeForce GT 640 v3, created by Zotac.

Overclock: Central Unit
The Central Unit runs at the same speed.

Overclock: Memory Clock
The Operating Memory Clock and the Frame Buffer remain the same.

Cooling Solution
The Cooling System has been replaced by Zotac's Silent Cooling Solution.

Without Overclocking Out of The Box, GeForce GT 640 v3 Zotac 2GB Edition is as fast as the reference GeForce GT 640 v3.
Iris Pro Graphics 5200 Desktop are found in some of the 2013 Haswell desktop processors.
They feature 40 Execution Units (160 Shader Processing Units), 8 TMUs and 4 ROPs. They share system memory and so the memory channel and speed will depend on the users configuration. The best possible combination is a dual-channel bus-width with an operating memory clock of 800MHz.
Its central unit and turbo frequency also depend on the CPU its embedded but it ranges from 400MHz to 1300MHz.
Compared to Iris Graphics 5100 Desktop, they offer an additional eDRAM cache of 128MB and so might offer performance identical to a dedicated GeForce GT 640 or a Radeon HD 6670.
Recommended CPU
Possible GPU Upgrades
GPU Variants