NVIDIA GeForce 9800 GX2 vs 840A

NVIDIA GeForce 9800 GX2
NVIDIA GeForce 840A

General info

Comparison of GeForce 9800 GX2 and GeForce 840A architecture, market type and release date.
Place in performance rating
 
Architecture
Tesla
 
Maxwell
Code name
G92
 
GM108
Type
Desktop
 
Desktop
Release date
18 March 2008
 
17 March 2014
Launch price (MSRP)
$599
 
n/d

Technical specs

GeForce 9800 GX2 and GeForce 840A's general performance parameters such as number of shaders, GPU core clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of GeForce 9800 GX2 and GeForce 840A's performance, but for precise assessment you have to consider its benchmark and gaming test results.
Pipelines
2x 128
 
384
CUDA cores
256 (128 per GPU)
 
n/d
Core clock speed
1500 MHz
 
1029 MHz
Boost Clock
n/d
 
1124 MHz
Transistor count
754 million
 
n/d
Manufacturing process technology
65 nm
 
28 nm
Power consumption (TDP)
197 Watt
 
33 Watt
Maximum GPU temperature
105 °C
 
n/d
Texture fill rate
76.8 billion / sec
 
17.98 GTexel / s
Floating-point performance
2x 384.0 gflops
 
863.2 gflops

Compatibility, dimensions and requirements

Information on GeForce 9800 GX2 and GeForce 840A compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
Interface
PCIe 2.0 x16
 
PCIe 3.0 x8
Length
10.5" (26.7 cm)
 
n/d
Supplementary power connectors
6-pin & 8-pin
 
n/d
SLI options
Quad
 
-

Memory

Parameters of memory installed on GeForce 9800 GX2 and GeForce 840A: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors don't have dedicated memory and use a shared part of system RAM.
Memory type
GDDR3
 
DDR3
Maximum RAM amount
2x 512 MB
 
1 GB
Memory bus width
512 Bit
 
64 Bit
Memory clock speed
1000 MHz
 
2002 MHz
Memory bandwidth
128 (64 per GPU)
 
16.02 GB / s

Video outputs and ports

Types and number of video connectors present on GeForce 9800 GX2 and GeForce 840A.
Display Connectors
2x DVI, 1x HDMI
 
No outputs
Display Connectors
HDMIDual Link DVI
 
n/d
Multi monitor support
+
 
n/d
HDMI
+
 
-
Maximum VGA resolution
2048x1536
 
n/d
Audio input for HDMI
S / PDIF
 
n/d

Technologies

Technological solutions and APIs supported by GeForce 9800 GX2 and GeForce 840A. You'll probably need this information if you need some particular technology for your purposes.
3D Vision
+
 
-
CUDA
+
 
-
SLI
+
 
n/d

API support

APIs supported by GeForce 9800 GX2 and GeForce 840A, sometimes including their particular versions.
DirectX
11.1 (10_0)
 
12.0 (11_0)
OpenGL
2.1
 
4.6

Benchmark performance

Non-gaming benchmarks performance of GeForce 9800 GX2 and GeForce 840A. Note that overall benchmark performance is measured in points in 0-100 range.

Overall benchmark performance

9800 GX2 3.50
840A 3.50

Passmark

9800 GX2 797
840A 869 +9%

Gaming performance

Let's see how good GeForce 9800 GX2 and GeForce 840A are for gaming. Particular gaming benchmark results are measured in FPS.

Advantages of NVIDIA GeForce 9800 GX2

Wider memory bus (512 vs 64 bit)
Higher memory bandwidth (128 vs 16.02 GB/s)
3D Vision
PhysX (hardware acceleration of physical simulation engine named PhysX)
CUDA (Compute Unified Device Architecture - an API for video card computing power usage in tasks different from 3D graphics processing. Can be used for physics simulation for instance)
SLI (Scalable Link Interface - a technology for uniting several NVIDIA GPUs processing power in one PC)
HDMI

Advantages of NVIDIA GeForce 840A

Much newer (17 March 2014 vs 18 March 2008)
More pipelines (384 vs 128)
Finer manufacturing process technology (28 vs 65 nm)
Less power hungry (33 vs 197 watts)

So, 9800 GX2 or 840A?

Technical City couldn't decide between NVIDIA GeForce 9800 GX2 and NVIDIA GeForce 840A. The differences in performance seem too small.
Should you still have questions on choice between GeForce 9800 GX2 and GeForce 840A, ask them in Comments section, and we shall answer.

Cast your vote

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favourite video card.

NVIDIA GeForce 9800 GX2
NVIDIA GeForce 840A
Like
Like

Advices and comments

Here you can ask a question about GeForce 9800 GX2 or GeForce 840A, agree or disagree with our judgements, or report an error or mismatch.