GeForce GT 640 Rev. 2
NVIDIA
G3D Mark
1,168
MSRP
$99
AVG Price
$99
Performance Spectrum - GPU
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.
Overview
The GeForce GT 640 Rev. 2 is manufactured by NVIDIA. It was released in May 29 2013. It features the Kepler 2.0 architecture. The core clock speed is 1046 MHz. It has 384 shading units. The thermal design power (TDP) is 49W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,168 points. Launch price was $89.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. The GeForce GT 640 Rev. 2 is positioned at rank #109 in our cost-efficiency ranking, representing a Balanced cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar GeForce GT 640 Rev. 2
FPS Benchmarks
Predicted performance for GeForce GT 640 Rev. 2 across popular games. Tested paired with Ryzen 7 7800X3D to isolate GPU performance.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Technical Analysis
Detailed breakdown of GeForce GT 640 Rev. 2 specifications and capabilities.
Graphics Performance
The GeForce GT 640 Rev. 2 scores 1,168 in the G3D Mark benchmark (the standard measure of rasterization GPU performance), placing it in the Entry Level tier as a Legacy generation graphics card. It is built on the Kepler 2.0 (2013−2015) architecture (codename: GK208), manufactured on a 28 nm process— smaller process nodes improve power efficiency and transistor density. It packs 384 shader units (the primary compute units for rendering pixels), 32 TMUs (texture mapping units), and 8 ROPs (render output units that handle final pixel output). Raw FP32 compute power: 0.8033 TFLOPS — this measures the theoretical peak floating-point performance.
| Specification | GeForce GT 640 Rev. 2 |
|---|---|
| G3D MarkPassMark 3D graphics benchmark score | 1,168 |
| ArchitectureGPU microarchitecture generation | Kepler 2.0 (2013−2015) |
| CodenameInternal GPU die codename | GK208 |
| Manufacturing ProcessFabrication node — smaller = more efficient | 28 nm |
| Shader UnitsCore compute units for rendering/compute | 384 |
| TMUsTexture Mapping Units — handle texture sampling | 32 |
| ROPsRender Output Units — final pixel/color blending | 8 |
| Base ClockGuaranteed minimum GPU frequency | 1046 MHz |
| Compute (FP32)Peak single-precision floating-point performance | 0.8033 TFLOPS |
| Texture Fill RateTextures processed per second | 33.47 GTexel/s |
| PCIe InterfaceCPU↔GPU data link generation | PCIe 3.0 x16 |
| Transistor Count | 915 million |
| Performance RankPosition in global GPU performance ranking | #786 |
Video Memory (VRAM)
The GeForce GT 640 Rev. 2 is equipped with 0.5 GB of GDDR5 video memory connected via a 64-bit memory bus, delivering Unknown of bandwidth. Memory operates at 8 Gbps effective speed.
| Specification | GeForce GT 640 Rev. 2 |
|---|---|
| VRAM SizeVideo memory capacity — more = better for high-res textures | 0.5 GB |
| VRAM TypeMemory technology generation | GDDR5 |
| Memory BusWidth of data path — wider = more bandwidth | 64-bit |
| Memory SpeedEffective memory data rate | 8 Gbps |
| BandwidthMaximum data throughput between GPU and VRAM | Unknown |
| L1 Cache | 32 kB |
| L2 Cache | 128 kB |
Advanced Features & APIs
Graphics API support: DirectX 12 (11_0), Vulkan 1.2, OpenGL 4.6— latest API versions enable the most advanced rendering features like ray tracing and mesh shaders.
| Specification | GeForce GT 640 Rev. 2 |
|---|---|
| NVIDIA Reflex | ❌ Not Supported |
| DLSS Frame Generation | ❌ Not Supported |
| DLSS Super Resolution | ❌ Not Supported |
| DirectXMicrosoft graphics API version | 12 (11_0) |
| VulkanCross-platform graphics API | 1.2 |
| OpenGLLegacy graphics API | 4.6 |
| Compute APIGPGPU framework (CUDA/ROCm/OpenCL) | CUDA 3.5 |
| Multi-GPUSLI/CrossFire/NVLink support | None |
Display & Media
Display outputs: DVIx 0, HDMI 1.4ax 1, VGAx 2 — supports up to 3 simultaneous displays. Hardware encoder: NVENC (Kepler), decoder: PureVideo HD 5— dedicated hardware for video encoding/decoding accelerates streaming, recording, and video playback. Supported codecs: H.264,MPEG-2,VC-1.
| Specification | GeForce GT 640 Rev. 2 |
|---|---|
| 0 PortsNumber of 0 display connectors | DVIx |
| 1 PortsNumber of 1 display connectors | HDMI 1.4ax |
| 2 PortsNumber of 2 display connectors | VGAx |
| Max DisplaysMaximum simultaneously connected monitors | 3 |
| Hardware EncoderVideo encoding engine version | NVENC (Kepler) |
| Hardware DecoderVideo decoding engine version | PureVideo HD 5 |
| CodecsSupported video compression formats | H.264,MPEG-2,VC-1 |
Power & Dimensions
The GeForce GT 640 Rev. 2 draws 49 Watt under load (TDP) — a 300W PSU minimum is recommended. Power connector: None. Physical size: 145mm long, 111mm tall, occupying 1 expansion slots, weighing 250g— verify your case has clearance before purchasing. Typical temperatures: 35 at idle, 65 under load.
| Specification | GeForce GT 640 Rev. 2 |
|---|---|
| TDPPower consumption under load | 49 Watt |
| Recommended PSUMinimum power supply wattage | 300W |
| Power ConnectorRequired PCIe power cable type | None |
| Card LengthGPU card length — check case clearance | 145mm |
| Card Height | 111mm |
| Slot WidthExpansion slots occupied | 1-slot |
| Weight | 250g |
| Idle TemperatureTypical temperature at desktop idle | 35 |
| Load TemperatureTypical temperature under gaming load | 65 |
Value Analysis
At an average price of $99, the GeForce GT 640 Rev. 2 delivers 12 G3D Mark points per dollar. It holds Rank #109 in the cost-benefit ranking — a comprehensive score that weighs raw performance against current market pricing. Overall performance ranking position: #786 among all indexed GPUs.
| Specification | GeForce GT 640 Rev. 2 |
|---|---|
| MSRPManufacturer's Suggested Retail Price | $99 |
| Avg Price (30d)Average market price over the last 30 days | $99 |
| Cost-Benefit RankOverall value ranking position | #109 |
| Performance RankPosition in global GPU performance ranking | #786 |
| Release Date | May 29 2013 |
| Release Year | 2013 |
Similar Performance
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Our Recommendation for GeForce GT 640 Rev. 2
Suggested pairings based on performance balance
Minimum (Avoid Bottleneck) (12)
Recommended (Balanced) (12)
High-End (Max Performance) (12)
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