GeForce 7800 GT vs GT 820M

Place in performance ranking	944	1152
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.02	no data
Architecture	Fermi 2.0 (2010−2014)	Curie (2003−2013)
GPU code name	GF117	G70
Market segment	Desktop	Desktop
Release date	27 November 2013 (10 years ago)	11 August 2005 (18 years ago)
Launch price (MSRP)	no data	$449
Current price	$310	$225 (0.5x MSRP)

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

GT 820M and 7800 GT have a nearly equal value for money.

Detailed specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	96	no data
Core clock speed	775 MHz	400 MHz
Number of transistors	585 million	302 million
Manufacturing process technology	28 nm	110 nm
Power consumption (TDP)	15 Watt	65 Watt
Texture fill rate	12.40	8.000
Floating-point performance	297.6 gflops	no data

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 2.0 x16	PCIe 1.0 x16
Length	no data	226 mm
Width	no data	1-slot
Supplementary power connectors	no data	1x 6-pin

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	DDR3	GDDR3
Maximum RAM amount	1 GB	256 MB
Memory bus width	64 Bit	256 Bit
Memory clock speed	1800 MHz	1000 MHz
Memory bandwidth	14.4 GB/s	32 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors

No outputs

2x DVI, 1x S-Video

API compatibility

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX	12 (11_0)	9.0c (9_3)
Shader Model	5.1	3.0
OpenGL	4.6	2.1
OpenCL	1.1	N/A
Vulkan	N/A	N/A
CUDA	2.1	no data

Synthetic benchmark performance

Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GT 820M 1.47
+133%

7800 GT 0.63

GT 820M outperforms 7800 GT by 133% based on our aggregate benchmark results.

Passmark

This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Benchmark coverage: 25%

GT 820M 567
+132%

7800 GT 244

GT 820M outperforms 7800 GT by 132% in Passmark.

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary

Performance score	1.47	0.63
Recency	27 November 2013	11 August 2005
Maximum RAM amount	1 GB	256 MB
Chip lithography	28 nm	110 nm
Power consumption (TDP)	15 Watt	65 Watt